80-481: Interstate 80 Business ( I-80 Bus ), called the Capital City Freeway in its entirety and also known as Business 80 , is a business loop of Interstate 80 (I-80) through Sacramento, California , United States. The route is also colloquially referred to as "Cap City Freeway" and "Biz 80" . The entire route is a freeway . It originally carried mainline I-80 through Sacramento until
160-800: A U.S. Route shield to denote Bus. US 81). For Interstate business routes, an indication of whether the route is a business loop or business spur may also be included (e.g., adding "LOOP 44" inside the Interstate marker). The Michigan Department of Transportation 's official state maps denote Interstate business routes with green shields that look similar to Interstate business route signage. Business routes are maintained by different levels of government in different states. Some incorporate business routes into their state-maintained highway systems; others, such as Indiana and Wisconsin , entrust business route maintenance to local governments. Business routes typically predate their parent highways. They follow
240-477: A balanced, healthy ecosystem. Non-native, and sometimes invasive, species have been introduced to the American River ecosystem. These exotic species have no natural predators and combat with native species for sun, space, and nutrients, causing substantial problems for the native plant life and the entire bionetwork. The American River Parkway Foundation, in collaboration with Sacramento County Parks, manages
320-718: A downtown area, I-80 Bus was not assigned to the pre-freeway alignment of US 40 , but to a freeway. The existence of two freeways, both numbered 80, caused some confusion, and, in 1996, the full route was given the Capital City Freeway name at the request of the Sacramento Area Council of Governments. This name appears on overhead signs at prominent interchanges . The route is referred to as Business 80, Biz 80, Capital City Freeway, Cap City Freeway, and US 50 (western section only) by residents and mapmakers. Caltrans does not normally use
400-615: A four-lane divided highway (with provisions for a six-lane freeway) to connect with the North Sacramento Freeway in the vicinity of Arden Way. The new freeway's southern terminus was the surface roads at 29th and 30th streets. At the time, the Elvas Freeway was conceived and built, the Division of Highways was already considering an elevated freeway along the 29th Street/30th Street corridor that would connect with
480-524: A large dam on the American River by the late 19th century. During the 20th century, the American River was extensively developed for flood control, hydroelectricity production and irrigation. Folsom Dam is the primary flood-control facility for Sacramento. The numerous hydroelectric dams upstream on the Middle and South Forks are not constrained by flood control requirements; rather, the needs of electricity and water supply govern their operation. Folsom Dam
560-547: A portion of US 40 , originally ran west from Marconi Avenue to an intersection with Del Paso Boulevard. The section from Arden Way eastbound back to Marconi Avenue is now part of the currently named Capital City Freeway (while the SR ;160 section retains the original freeway name). The original North Sacramento Freeway connected to the Roseville Freeway at the curve north of Marconi Avenue (commonly known as
640-654: A safe route for colonizers across the Sierra Nevada. After a failed attempt to cross the mountains via the South Fork of the American River, Smith's group managed to cross via Ebbetts Pass on the headwaters of the Stanislaus River , becoming the first non-Natives to do so. In Smith's honor the Spanish settlers named the river Rio de los Americanos (American River). During this time, Alta California
720-551: A sharp curve northward to descend into Tahoe Valley. The South Fork has multi-use recreational areas, including the Rubicon Trail for motorized adventuring and whitewater rafting venues. The South Fork also features the historic town of Coloma , where the California Gold Rush began in 1848. Trout fishing and recreational gold panning are popular activities on the South Fork. The Silver Fork American River
800-452: A threatened anadromous fish species that have historically used the American River as a location for an important part of their life cycle while in freshwater. The American River, however, has lost some of its natural flow and riverbed because of water projects and diversions. The American River Salmonid Spawning and Rearing Habitat Restoration project, which started in 2008, entails the placement of gravel to provide adequate habitat conducive to
880-605: Is 7 miles (11 km) downstream from Folsom Dam and helps to stabilize peaking power releases from Folsom Dam, and divert water into the Folsom South Canal for irrigation. Eight hydroelectric plants on the South Fork are operated by Sacramento Municipal Utility District (SMUD) as the Upper American River Project . These plants are fed by a series of reservoirs including Loon Lake , Ice House Reservoir and Union Valley Reservoir . With
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#1732783678728960-605: Is a 20-mile-long (32 km) tributary of the South Fork American River, that has its origin at Silver Lake The American River watershed crosses multiple climate zones due to the large range in elevations. The climate of the lower American River valley is Mediterranean and temperate grassland. Sacramento County in particular, where the main stem American River is located, is known for its cool winters and hot summers, with low average precipitation. The North, Middle and South Forks originate in alpine zones along
1040-559: Is known for the discovery of gold at Sutter's Mill in Coloma in 1848 that started the California Gold Rush and contributed to the initial large-scale settlement of California by White American migrants. Today, the river still has high quality water, and it is the main source of drinking water for Sacramento . This river is dammed extensively for irrigation, flood control , and hydroelectric power . The American River watershed supports Mediterranean, temperate, and montane ecosystems, and it
1120-611: Is no such mandate under § 350 for Route 50, thus Caltrans was able to start removing references to I-80 Bus on signage in the US ;50 segment. Caltrans considers the Capital City Freeway to be from the interchange with US 50/SR 99 to I-80. Despite Caltrans's official signage and reporting practices, mapmakers may still show the I-305 and SR 51 designations, as well as the I-80 Bus/US ;50 concurrency on
1200-607: Is similar to a county route , where a particular city forms its own highway system, usually of beltways . The city of Pittsburgh , for instance, has a colored belt system . Officials in Charlotte, North Carolina , created Charlotte Route 4 , a loop of surface streets around Uptown Charlotte . A route in Pawtucket, Rhode Island known as the Downtown Circulator was created by the city to help travelers navigate
1280-414: Is the home of a diverse array of fish and wildlife. The Maidu , Miwok , Nisenan , and Wintun peoples have inhabited the American River area near present-day Sacramento for at least 5,000 years before Spaniards and colonial Americans arrived in the region; human habitation in what some consider present-day Northern California is believed to date back as far as 12,000 years. These tribes have utilized
1360-539: Is the longest tributary of the American River, at 88 miles (142 km). It begins at an elevation of about 7,900 feet (2,400 m) near Lake Tahoe in Placer County at Mountain Meadow Lake, just northeast of Granite Chief and immediately due west of Palisades Tahoe (formerly Squaw Valley) Ski Resort . It flows westward through remote wilderness areas. The North Fork and its tributaries provides one of
1440-414: Is utilized for a variety of recreational uses. Locals and travelers alike use the river's scenic landscape for bird watching, hiking, biking, fishing, river rafting, kayaking, and more. The American River is a clean, biodiverse river that people can safely swim in and do other recreational activities in. The American River is specifically known for its whitewater rafting. The South Fork has Class III rapids,
1520-675: The Auburn State Recreation Area . The Western States Trail hosts multiple annual endurance events, including the Tevis Cup equestrian trail ride, and the world-famous Western States 100-Mile Trail Run, both beginning at Squaw Valley and leading to Auburn via remote wilderness trails. The South Fork is 87 miles (140 km) long. It originates at Echo Summit near Echo Lake south of Lake Tahoe in El Dorado County , just south of where U.S. Route 50 makes
1600-653: The California State Legislature extended US 50 west to cover the western half of old I-80, and the eastern half was assigned the new SR 51 number and designated as I-80 Bus. The signage change from I-880 to I-80, and the previous I-80 to I-80 Bus was installed in November 1983. The old I-80 was not signed as SR 51 but as a business route . Unlike most business routes in California, which run along locally-maintained streets through
1680-524: The Capital City Freeway in 1996. As part of a resigning project which commenced in 2016, references to I-80 Bus on the western segment were being removed, subsequently leaving that portion only signed as US 50. The California Department of Transportation (Caltrans) however still lists the entire route under one I-80 Bus exit list. SR 51 is part of the California Freeway and Expressway System , and both SR 51 and I-305 are part of
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#17327836787281760-499: The Middle Fork Project , whose primary reservoirs are situated at French Meadows Reservoir and Hell Hole Reservoir . The Middle Fork Project generates 1.03 billion kilowatt hours each year and also provides 120,000 acre-feet (0.15 km ) of domestic water supply. The American River Parkway is a 23-mile (37 km) stretch along the American River and includes about 5,000 acres (20 km ) of embankment between
1840-485: The Midwestern United States , although there are a number of city routes in other parts of the U.S., as well. These routes serve the same purpose as business routes, but they feature "CITY" signs instead of "BUSINESS" signs above or below the route shields. The designations of many of these city routes are being phased out in favor of the business route designation. Another definition of a "city route"
1920-653: The Mokelumne Wilderness , where it meets the watersheds of the Mokelumne and Carson Rivers . Lands east of the American River watershed divide drain into Lake Tahoe , which flows into the Truckee River. During most years, a significant snow-pack builds up in the Sierra Nevada which provides water during the hot, dry summers. In warmer winters much of the precipitation may fall as rain instead, causing flooding, but resulting in lower summer flows due to
2000-808: The National Highway System , a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration (FHWA). Currently, I-80 Bus is the only Interstate business route in California to exist as a freeway. The western section of I-80 Bus begins in West Sacramento at I-80 , where I-80 leaves the West Sacramento Freeway onto the Beltline Freeway (which travels north of
2080-629: The Nimbus Fish Hatchery and where the American River and the Sacramento River converge. The Sacramento County Regional Parks owns most of the land that is operated by the American River Parkway. This area serves the citizens of Sacramento and visitors from away with access to the river and parks, picnic areas, biking and jogging paths, trails for hiking, and habitat for fish and wildlife. Chinook Salmon are
2160-613: The Orange Crush interchange (where I-5 intersects with SR 22 and SR 57 ), and west back to I-5 in Anaheim via Orangewood Avenue. It was removed from the state highway system in 1965. Under the official exit list by Caltrans, mileage is measured along I-80 BL as one continuous route, instead of unsigned SR 51 having its own separate set of mileage and exit numbers. Business loop A business route (or business loop , business spur , or city route ) in
2240-709: The Tahoe and Eldorado National Forests . The North and Middle Forks join near Auburn , and continue downstream as the North Fork, although the Middle Fork carries a higher volume of water. The North and South Forks join in Folsom Lake . All three forks are known for their verdant canyons, forested ridges, massive rock formations, trails, back-country winter adventuring among snowy peaks, fishing and white water rafting . There are various fish species that live within
2320-507: The United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or town, and finally reconnects with the same parent numbered highway at the business route's end. Their designation is often intended to direct traffic to the business districts bypassed when a new highway is constructed some distance away. Business routes share
2400-487: The confluence with the Middle Fork American River at Auburn . Below the confluence, the North Fork continues several miles until reaching Folsom Lake. Both the North Fork and Middle Fork feature archaeological and historic sites of ancient Native American culture and 1850s Gold Rush habitation. The Middle Fork is 62 miles (100 km) long. It originates a mere 1.7-mile (2.7 km) from
2480-576: The many business routes stemming off US 1 , all of which are marked as "US 1 Bus.". But within a state's transportation administration, different business routes may be assigned unique names to differentiate them. For example, Texas has 11 different business routes attached to I-35 ; while all are signed as "Business Loop Interstate 35", (BL I-35) they are designated by the Texas Department of Transportation as BL I-35-A, BL I-35-B, and so on. Business routes are typically marked with
Interstate 80 Business (Sacramento, California) - Misplaced Pages Continue
2560-607: The 1950s on, construction of the Interstate Highway System drew traffic away from Route 66, hurting the many businesses built on that traffic. Dozens of old sections of US 66 are now designated as business routes for I-15 , I-40 , I-44 , and I-55 . While business routes frequently integrate into the street grid of their town or city, some maintain the higher-speed, limited-access design of their parent highways. These are sometimes called expressway business routes. City routes are most commonly found in
2640-487: The American River include: Native plants include: Historically, the American River, like many other rivers in California, were modified by the dams of beavers, until European trappers removed many of the beavers from their native habitat for their fur. Since the California Gold Rush was centered in an area that included the American River basin, it was one of the earlier California rivers to be populated, beginning at Leidesdorff Ranch, owned by William Leidesdorff . Water
2720-522: The American River such as Chinook Salmon and Steelhead Trout. The American River headwaters lie along about 50 miles (80 km) along the Sierra Crest from Mount Lincoln in the north ( 39°17′16″N 120°19′41″W / 39.28778°N 120.32806°W / 39.28778; -120.32806 ) where it adjoins the watersheds of the South Yuba and Truckee Rivers , to Winnemucca Lake in
2800-604: The Bryte neighborhood, over the Sacramento River, and into the Natomas area). This interchange in West Sacramento is also the current west end of US 50 , as well as the unsigned I-305. The I-80 Bus/US 50/unsigned I-305 segment then runs approximately 5.63 miles (9.06 km) from I-80 west to SR 99 southeast of Downtown Sacramento . In downtown West Sacramento, I-80 Bus/US 50/unsigned I-305 split from
2880-498: The Elvas Freeway portion just north of A Street. The State Division of Highways (predecessor to Caltrans) constructed Sacramento's freeways system incrementally from the 1940s to the 1970s. The plan for the Elvas Freeway was presented in the Sacramento Area Traffic Survey in 1947–1948, and the freeway was built between 1950 and 1955. The Division of Highways built the 2.9-mile (4.7 km) Elvas Freeway as
2960-523: The I-80 Bus designation, except for signage and other related concepts like Cal-NExUS exit numbers (which are continuous along the business loop). Caltrans refers to the western half as US 50 and the eastern half as SR 51 for traffic condition reporting. Under the California Streets and Highways Code § 351.1 , "Route 51 shall be signed Interstate Business Loop 80". There
3040-901: The I-80 bypass freeway from the Interstate System. In 1980 California submitted to the American Association of State Highway and Transportation Officials (AASHTO) proposals to relocate I-80 in Sacramento onto then I-880, extend US 50 west to cover the west half of old I-80, and to assign I-305 to the west half of old I-80, and delete I-880 in the Sacramento area (the route would eventually be relocated to then SR 17 from I-280 in San Jose to I-80 in Oakland in 1982–1984). AASHTO approved these proposals. The next year,
3120-510: The Marconi Curve, where the freeway once ended at Auburn Boulevard). At the east end of I-80 Bus, the Roseville Freeway continues northeast to Roseville as I-80, while the short unsigned SR 244 heads east to Auburn Boulevard. I-80 heads in both directions around the north side of Sacramento. A partially built portion of a never completed replacement freeway for SR 51, in the median of I-80, now serves as parking and access for
3200-553: The Middle Fork has Class IV rapids, and the North Fork has Class IV spring run-off rapids. All three rivers also feature Class II sections. The areas with rapids still feature scenic views and wildlife, which is what makes it the most popular whitewater rafting location in California The California Office of Environmental Health Hazard Assessment has issued safe eating advice based on levels of mercury and polychlorinated biphenyl for fish caught from
3280-467: The Sierra Crest and flow through subalpine, montane and temperate coniferous forests. In the foothills, oak woodland and grassland are dominant. The region is prone to seasonal drought conditions, as about 90 percent of precipitation falls as rain and snow between the months of November and April. Much of the Central Valley was historically wetlands and has extremely fertile soil; today,
Interstate 80 Business (Sacramento, California) - Misplaced Pages Continue
3360-594: The South Fork. While they are not operated by SMUD, they depend on the releases from SMUD reservoirs to generate electricity. The El Dorado Irrigation District owns the Akin Powerhouse, and PG&E owns the Chili Bar Powerhouse. The Rock Creek Powerhouse is owned by Sithe Energies. The Placer County Water Agency operates five hydroelectric power plants on remote sections of the Middle Fork as
3440-462: The US 50 segment of I-80 Bus, California Streets and Highways Code § 351.1 mandates that "Route 51 shall be signed Interstate Business Loop 80". However, exit numbers assigned along SR 51 start at 6 instead of 1 or 0, treating I-80 Bus as one continuous route. At the interchange southeast of Downtown Sacramento, I-80 Bus turns north onto unsigned SR 51 near its southern end. US 50 continues east, SR 99 heads south, and
3520-702: The West Sacramento Freeway, which is now locally maintained in part over the Tower Bridge up to the door of the capitol but was once designated as SR 275 . I-80 Bus/US 50/unsigned I-305 then crosses the Sacramento River on the Pioneer Memorial Bridge , intersecting with I-5 on the eastern river bank. It then runs on top of an embankment between W and X streets to SR 99. The W-X Freeway gets its name from running parallel to W and X streets. Beginning in 2016, signs along
3600-626: The designation "Recreational River" under both the California Wild and Scenic Rivers Act (1972) and the National Wild and Scenic Rivers Act (1980). This status provides state and national recognition to protect the river's outstanding scenic, fish and wildlife, historic, cultural, and recreational values. The American River is fed by its North, Middle, and South forks, which are located in El Dorado County , Placer County , and Sacramento County . The river's three forks originate in
3680-446: The diversity of habitats and biodiversity by supporting protected native or endemic species that are listed as endangered or threatened. The American River Conservancy protects the American River watershed to preserve the cultural and historic values of the river systems and the landscapes surround them. They are also invested in keeping the American River for recreational activities as well as its natural scenic views. The American River
3760-682: The downtown area. American River The American River is a 30-mile-long (50 km) river in California that runs from the Sierra Nevada mountain range to its confluence with the Sacramento River in downtown Sacramento . Via the Sacramento River, it is part of the San Francisco Bay watershed. This river is fed by the melting snowpack of the Sierra Nevada and its many headwaters and tributaries, including its North , Middle , and South Forks . The American River
3840-401: The early 1980s. The eastern half, originally known as the Elvas Freeway, was initially grandfathered into the Interstate Highway System ; however, plans to upgrade or realign this portion to meet Interstate Highway standards were canceled. As such, the I-80 designation through Sacramento was moved to a northern bypass of the city that had previously been signed I-880 , and the former routing
3920-538: The exception of Folsom Lake, Union Valley is the largest in the American River watershed, storing 277,000 acre-feet (0.342 km ) of water. The Upper American River Project produces 1.8 billion kilowatt hours in an average year, enough for about 20 percent of Sacramento's electricity needs. The SMUD plants are run on a peaking basis, although recreational boating and environmental flow requirements constrain their operation slightly. A number of run-of-the-river hydroelectric plants are located further downstream on
4000-452: The expedition recorded the name as Rio de los Lagos (River of the Lakes) which may or may not have been an error, as in those times the area of the Central Valley surrounding the American River was home to vast marshes , which would have given the river the appearance of a series of lakes. During the 1820s, Jedediah Smith led an expedition to the American River with the goal of finding
4080-598: The indigenous population was wiped out. The surviving natives became hostile to exploitative European settlers and traders for quite some time, and prevented the HBC from establishing a permanent outpost here. In 1839, Swiss immigrant John Sutter established the New Helvetia settlement on the American River, near the present-day location of central Sacramento. In 1848, following the Mexican–American War , California
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#17327836787284160-558: The invasive plants on the American River. Fourteen environmental watershed groups are shown to be active in the Upper American River Watershed by the Adopt A Watershed Program of the U.S. EPA . The Upper American River Foundation is a prominent one. There are over 40 species of native and non-native fish in the American River, including: Wildlife in the American River basin includes: Invasive plants on
4240-515: The lack of snow. Due to California's highly variable weather patterns, runoff volumes in the American River can rise and fall drastically from one year to the next. Below Folsom Dam , the river passes through an urbanized area but is buffered by a riparian park, the American River Parkway . Containing fishing and family-oriented rafting, and paved bicycling and multi-use trails, it runs 30.6 miles (49.2 km) from Folsom Lake to
4320-604: The most biologically diverse habitats in North America. The North Fork features scenic multi-use trails along forested ridge-tops and riparian corridors. It flows freely as a designated National Wild and Scenic Rivers System river until reaching the North Fork Dam, which was built to contain mining debris. This dam creates the small Lake Clementine just north of the Foresthill Bridge and upstream of
4400-428: The normal red and blue layout with an all-green color scheme. Also, the word "BUSINESS" appears within the shield, at its top above the highway number, instead of "INTERSTATE", and either "LOOP" or "SPUR" may appear below the word "BUSINESS" and above the Interstate number. On maps, business routes are typically denoted by a standard marker containing the route number and the abbreviation "BUS" (e.g., "BUS 81" inside
4480-548: The northernmost three stations ( Watt/I-80 , Watt/I-80 West , and Roseville Road ) on the Sacramento Regional Transit District 's light rail Blue Line . If this replacement freeway had been completely built as originally planned, I-80 would have continued south following the railroad tracks going through the Ben Ali neighborhood of North Sacramento, crossed over SR 160, and joined with
4560-542: The original numbered route through a city or town. Their designation as business routes is largely the product of the era of large-scale highway construction in the United States from the 1930s through the 1970s. Typically, new highway designations carried traffic directly through the center of a given city or town. In later development, bypasses would be constructed around the central business districts they had once passed directly through. As these bypasses were built,
4640-441: The original sections of these routes that had once passed directly through a given city or town would often be designated as business routes. These development patterns were the subject of frequent debate, particularly among business owners who feared the loss of customer traffic as highways took motorists away from downtown. For example, U.S. Route 66 was for many years the primary road connecting Chicago and Los Angeles . From
4720-402: The parent routes they parallel, some states, such as Maryland , opt to use green shields for business routes off U.S. Highways. In addition, Maryland uses a green shield for business routes off state highways, replacing the state name, "MARYLAND", with the word "BUSINESS". Interstate Highway business routes use the same four-pointed shield design as regular Interstate Highways, but substitute
4800-500: The rearing habitat for the anadromous fish and increase biodiversity of the American River. The American River Conservancy works to conserve the wildlife and their aquatic and terrestrial habitats and resources around the American River and Consumnes watersheds. They have protected over 27,000 acres (110 km ) since their inception in 1989. The land they protect helps the American River water quality by conserving and restoring wet meadows , wetlands, and riparian areas. They conserve
4880-483: The river's confluence with the Sacramento River. The American River Parkway incorporates historic Leidesdorff Ranch, a 35,000-acre (140 km ) cattle and wheat agribusiness owned by the "African Founding Father of California." Jedediah Smith Memorial Trail , a meandering 32-mile (51 km) cycle path, hugs the river bank from Old Sacramento to Folsom Lake . The trail was named for Smith and his men, who camped and trapped along its banks in 1828. The North Fork
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#17327836787284960-458: The salmonid's needs for spawning and rearing to reach a maturity level fit for the ocean. From 2008 to 2012, the placement totaled 85,880 short tons (77.91 kt) of gravel. The gravel will increase the number of fish redds, spawning nests, along the American River, which will decrease egg retention, and increase birth and survivorship rate. The project also included the introduction of small islands, loose woody debris, and larger boulders to advance
5040-406: The same number as the major (parent) routes they parallel. For example, U.S. Route 1 Business (US 1 Bus.) splits from and parallels US 1 , and Interstate 40 Business (I-40 Bus.) splits from and parallels I-40 . Typically, all business routes off the same parent route have the same name on signage. For example, St. Augustine business loop and Fredericksburg business loop are two of
5120-478: The soil. This large and extensive mining practice washed away entire mountainsides and heavily polluted all the waterways, including the American River, creating an environmental disaster for inhabitants, fish, birds, and other flora and fauna. During the Great Flood of 1862 the American River flooded massively, putting much of Sacramento under water for three months. Newly elected Governor Leland Stanford had to travel to his inauguration by rowboat; shortly after,
5200-582: The source of the North Fork on the south face of Granite Chief , between the summit and Emigrant Pass. It is characterized by somewhat broader steep canyons interspersed with reservoirs , waterfalls, and quiet riparian areas. The Middle Fork is used extensively for both motorized and non-motorized recreation, including fishing, white water rafting , bicycling (mountain and road), horseback riding, trail running and hiking. It contains areas used for hydroelectric generation, mining , and agricultural timber cultivation and harvesting. The Middle Fork features part of
5280-563: The state government moved temporarily to San Francisco. A significant contributor to the flood damage was the debris washed down by hydraulic mining, which had choked the river channel and reduced its capacity to drain floodwaters. In response, the city of Sacramento undertook a massive project to raise its streets and buildings as much as 9.5 feet (2.9 m). Many of original sidewalks and the first floors of buildings remain as subterranean spaces underneath today's streets. The lower American River has been one of seven California rivers to achieve
5360-408: The then proposed South Sacramento Freeway (SR 99). The Division of Highways went on to complete the Fort Sutter Viaduct along the 29th Street/30th Street corridor in 1968, which led the Division of Highways to convert the Elvas Freeway from four to six lanes in 1965. The Sacramento River Viaduct was completed in 1966, the Southside Park Viaduct was completed in 1967, and the rest of the W-X Freeway
5440-454: The type of major route the business route branches off. Business routes paralleling U.S. and state highways usually have exactly the same marker shapes and nearly the same overall appearance as the routes they parallel, with a rectangular plate reading "BUSINESS" placed above the shield (either supplementing or replacing the directional plate, depending on the preference of the road agency). To better identify and differentiate alternate routes from
5520-499: The unsigned I-305 ends. The elevated freeway carrying I-80 Bus east of downtown is between 29th and 30th streets, and an older section beginning at A Street and continuing northeast was originally known as the Elvas Freeway (and originally signed as US 99E ). On this section of freeway, I-80 Bus crosses the American River before its northeast-bound merge with the North Sacramento Freeway (the northern portion of SR 160 toward downtown). The North Sacramento Freeway, originally
5600-463: The vast amount of resources of the American River for shelter, clothes, baskets, and other goods. Europeans and their descendants arrived in the late 18th century. The Nisenan call the river Kum Sayo , meaning ' roundhouse river'. Spanish explorer Gabriel Moraga named the river Rio de las Llagas (River of Wounds) when he passed through the area in the early 1800s, perhaps due to hostile relations with local native peoples. Another member of
5680-453: The vast majority of wetlands have been converted to agriculture or urban areas. Most of the remaining wetland, riparian and aquatic ecosystems are restricted to the narrow corridor along the American River. There is an abundance of flora and fauna found at the American River that creates an immensely bio diverse ecosystem. Native plants along the American River Parkway are adapted to a Mediterranean climate, are drought tolerant, and help support
5760-460: The western segment were being updated to remove references to I-80 Bus and instead sign the route only as US 50. However, Caltrans still lists this segment under the I-80 Bus exit list instead of the US 50 one, and mapmakers to this day may continue to sign both the eastern and western sections as part of I-80 Bus. State Route 51 ( SR 51 ) is an unsigned state highway that begins at SR 99 and heads north toward I-80. Unlike
5840-473: The western segment. The SR 99 concurrency , running along US 50 and I-5 to northern Sacramento, is also not officially designated by Caltrans, but mapmakers will still also often show it as such. An earlier SR 51 was defined on July 1, 1964 on a section of pre-1964 Legislative Route 2 , providing a loop east of I-5 ( pre-1964 Legislative Route 174 there) through Orange via Main Street, around
5920-473: The word "BUSINESS" above the major route's number or route shield . Alternatively, some states designate business routes by adding the letter "B" after the parent route's number. For example, Arkansas business routes of US 71 are marked as "US 71B". On some route shields and road signs, the word "business" is shortened to just "BUS", though abbreviation is usually avoided to prevent confusion with bus routes . Business route signage varies depending on
6000-736: Was built in 1955 as a principal part of the Central Valley Project by the Army Corps of Engineers, and is operated by the Bureau of Reclamation. The concrete and earth embankment structure is more than 5 miles (8.0 km) long and creates Folsom Lake , impounding 1.1 million acre-feet (1.4 km ) of water when full. The dam is a multipurpose facility that acts as a reservoir for flood control, irrigation, domestic and industrial use, as well as hydroelectric power generation, recreation, and fish and wildlife habitat. Nimbus Dam
6080-513: Was ceded to the United States in the Treaty of Guadalupe Hidalgo . Just weeks later, James W. Marshall , an employee of Sutter, discovered gold on the South Fork, starting the California Gold Rush . Although miners looking to extract gold worked all three forks of the American River, the South Fork held the richest deposits. As the easily accessible placer gold was played out, large companies used hydraulic mining to access gold buried deeper in
6160-525: Was completed in 1968. The Elvas Freeway was connected to the W-X Freeway to the west and US 50 to the east, in 1968 and 1971, respectively. The W-X Freeway and the Elvas Freeway were signed as I-80. Between 1968 and 1975, a 5.2-mile (8.4 km) bypass was proposed that was to straighten the alignment of I-80 and increase its capacity. The Sacramento City Council voted in September 1979 to delete
6240-480: Was part of New Spain ; however in 1822, Mexico gained its independence from Spain and took control of California. In the 1830s, fur trappers of the Hudson's Bay Company (HBC) visited the area to trap beaver and otter. During one of these expeditions, smallpox or malaria were accidentally introduced to the local Native peoples, who had no immunity to European diseases. Some accounts suggest as much as 70 percent of
6320-404: Was then designated as Business 80. I-80 Bus then consisted of two connected segments. The western segment ran concurrently signed with US Route 50 (US 50) and also carried the unsigned designation of I-305. The eastern segment was assigned the unsigned designation of State Route 51 ( SR 51 ). After travelers complained that I-80 Bus was difficult to follow, it was named
6400-428: Was used to drive grist mills . Gold miners dredged the riverbed and constructed diversion dams for hydraulic mining . Mining activity caused sediment and mercury waste to accumulate in the rivers. The Natoma Company completed its Folsom Powerhouse in 1895 and began delivering power 22 miles (35 km) away to the city of Sacramento to power a streetcar system. Major flooding of the Sacramento area led to calls for
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