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71-672: State Route 52 ( SR 52 ) is a state highway in San Diego County, California , that extends from La Jolla Parkway at Interstate 5 (I-5) in La Jolla , San Diego, to SR 67 in Santee . It is a freeway for its entire length and serves as a major east–west route through the northern part of the city of San Diego. The road connects the major north–south freeways of the county, including I-5, I-805 , SR 163 , I-15 , SR 125 , and SR 67. SR 52 passes north of

142-478: A Route (officially State Highway Route ) number in the Streets and Highways Code (Sections 300-635) . Under the code, the state assigns a unique Route X to each highway, and does not differentiate between state, US, or Interstate highways. San Diego River It flows near Mission San Diego de Alcalá . The river's valley downstream from there is known as Mission Valley for that reason. The valley forms

213-500: A budget shortfall. Completion is scheduled to take place by 2040. Caltrans recommends adding two more lanes between I-5 and I-805, and two HOV lanes between I-805 and I-15. The entire route is in San Diego County . List of state highways in California This is a list of state highways in the U.S. state of California that have existed since the 1964 renumbering . It includes routes that were defined by

284-460: A full bicycle lane along the route in July ;1989, citing the high costs. Finally, on July 27, the final routing of SR 52 was determined, running along Prospect Avenue. In May 1990, Santee councilman Roy Woodward was censured for having a conflict of interest in voting to support the proposals for the freeway because he "held interests" in three properties that would benefit from

355-671: A high statewide priority." The CTC followed the director's wishes, approving the studies. The first part of this phase, from I-805 to Convoy Street, began construction in December ;1986. It was dedicated at a community celebration on July 11, 1987, and was scheduled to open to traffic a few weeks later. The first callboxes in San Diego County were installed on SR 52 near Convoy Street on June 20, 1988. On June 30, 1988, SR 52 from Convoy Street to Santo Road opened to traffic. The I-15 interchange

426-481: A petition against this route. On the other hand, there were objections about the "river route" costing approximately $ 15 million more (about $ 36.1 million in 2023 dollars) and cutting through a future "Town Center development". The Lakeside Chamber of Commerce preferred the route along the San Diego River, citing the proximity to that city. The environmental impact report was found to be deficient by

497-435: A pilot program to run transit buses along the shoulders of SR 52 between Kearny Villa Road and I-805. During rush hour , buses were able to use these shoulders to bypass slow traffic in the main lanes. The trial was considered successful as more than 99 percent of trips arrived on time, customer feedback was favorable and no safety concerns were encountered. On May 9, 2007, The San Diego Union-Tribune published

568-585: A plan to build a series of box culverts with rip rap, “hump back” river banks, islands, and hydro seeding. This plan would come to be known as the First San Diego River Improvement Project or FISDRIP. However, the project stalled in 1986 during the financial crisis of the same year. In a last-ditch effort to revive the project the Bond Ranch employed Robert Rodriguez (VP, Merrill Lynch Commercial Real Estate) to spearhead

639-502: A southern alignment through the town, with both the Prospect Avenue and San Diego River alternatives still viable. In the same month, the mayor of La Mesa , Fred Nagel, started a petition drive supporting the extension of the freeway due to the recurring traffic on I-8. The Caltrans environmental impact report indicated that the Prospect Avenue route would cost $ 89 million (about $ 205 million in 2023 dollars), compared to

710-489: A story which raised reader concerns about a dangerous dip in the freeway. The dip had developed in a section of the highway constructed on top of the Miramar Landfill, and had been caused by trash settling; it was repaired by the next day. The planning process for the remainder of SR 52 began as early as 1970, when the initial plan was to route the freeway through the city of Santee along Mission Gorge Road and

781-418: A total cost of $ 60 million (about $ 110 million in 2023 dollars) for the entire project. Property acquisition began in 1994, with many property owners along the south side of Mission Gorge Road being forced to move out of the way of the freeway and subsequent road construction, as Mission Gorge Road was moved south to accommodate the new freeway. About $ 40 million ($ 73.1 million in 2023 dollars)

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852-540: A transportation corridor for Interstate 8 and the San Diego Trolley 's Green Line . The river discharges into the Pacific Ocean near the entrance to Mission Bay , forming an estuary . The river has changed its course several times in recorded history. Prior to 1821, the San Diego River usually entered San Diego Bay . In the fall of 1821, however, a flood changed the river channel in one night, and

923-480: Is a junction with Santo Road, before traversing Mission Trails Regional Park , an open space preserve, for a few miles. The freeway ascends to Mission Trails Pass, north of the 1,230-foot (370 m) summit of Fortuna Mountain. The mountain is part of the Peninsular Range ; the highway cuts through Eocene rocks estimated to be 50 million years old and marine fossils . The road on the eastern side of

994-659: Is eligible for the State Scenic Highway System . In 2016, Caltrans officially designated the segment adjacent to Mission Trails Regional Park between Santo Road and Mast Boulevard as a scenic highway. SR 52 is also part of 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 . The entire route

1065-551: Is known as both the Soledad Freeway and the San Clemente Canyon Freeway. In 2013, SR 52 had an annual average daily traffic (AADT) of 69,000 at the eastern terminus with SR 67, and 103,000 between Convoy Street and SR 163, the lowest and the highest AADT for the highway, respectively. In 1959, Legislative Route 279 was designated as a highway from La Jolla to Santee and incorporated into

1136-486: Is tasked to acquire, manage and conserve land and to protect or provide recreational opportunities, open space, wildlife species and habitat, wetlands, water quality, natural flood conveyance, historical/cultural resources, and educational opportunities. One important goal is to help create a river-long park and hiking trail, stretching the full length of the river from its headwaters in the Cuyamaca Mountains to

1207-518: The 1964 state highway renumbering . Construction began in 1966 at the I-5 interchange with Ardath Road leading to La Jolla. It continued with the construction of San Clemente Canyon Road, which was later widened to become SR 52. The freeway was completed east to I-805 in 1970, and was built in two stages from there to Santo Road east of I-15; the last phase was completed in 1988. The freeway east of Santo Road encountered delays from environmentalists over

1278-612: The California State Legislature but never built, as well as routes that have been entirely relinquished to local governments. It does not include the few routes that were relinquished before 1964 or the larger number of sign routes that were renumbered in or before 1964. Each state highway in California is maintained by the California Department of Transportation (Caltrans) and is assigned

1349-575: The Federal Highway Administration in late 1986. In January 1987, the Santee City Council voted to commence a study of a more northern route, even though local residents and workers objected that this would postpone construction. In March, the study, done by BSI Inc., supported the Caltrans decision to abandon plans for the northern path due to the increased cost from the "mountainous, undeveloped" terrain. The council voted to support

1420-624: The Rose Canyon Fault before traversing Marine Corps Air Station Miramar (MCAS Miramar). East of Santo Road and west of SR 125, the highway goes through Mission Trails Regional Park , a large open preserve. SR 52 is also known as the Soledad Freeway and the San Clemente Canyon Freeway . Plans for a route between La Jolla and Santee date from 1959, and SR 52 was officially designated in

1491-557: The Rose Canyon Fault , composed of Late Cretaceous rock estimated to be 90 million years old, and Mount Soledad . Following exits with Clairemont Mesa Boulevard / Regents Road and Genesee Avenue, SR 52 intersects I-805 before exiting the canyon and traveling along the southern edge of the MCAS Miramar military base. From I-805 to SR 163, the highway goes through an area with visible Pliocene sedimentary rocks estimated to be 10 million years old. After passing

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1562-555: The U.S. Fish and Wildlife Service expressed concerns that construction near the San Diego River crossing might result in the destruction of the endangered least Bell's vireo habitat. Two of the four alternative routes considered by Caltrans passed through the Carlton Hills golf course, which the public opposed. In April 1988, the Sierra Club denounced the Prospect Avenue route; federal negotiators recommended shifting

1633-501: The right-of-way . In 2001, SANDAG gave $ 138 million (about $ 227 million in 2023 dollars) to the expansion of SR 52 to SR 67, which was necessary for extending the freeway past Cuyamaca Street. But by 2003, the transportation committee of SANDAG voted to delay the project due to decreased state funding. The City of Santee was required to make improvements to Forester Creek to accommodate potential flooding, which cost $ 30 million (about $ 45 million in 2023 dollars);

1704-609: The California Freeway and Expressway System. In the 1964 state highway renumbering , this became SR 52. However, SR 52 took more than fifty years to be constructed, due to delays in the planning and construction phases. A public hearing on Legislative Route 279 and on the Ardath Road connection to La Jolla was held on November 15, 1961. At the hearing, there were concerns expressed regarding destruction of vegetation. City and state officials indicated that

1775-689: The City of San Diego for the construction of the Trolly to help alleviate traffic congestion. In return the City allowed the reclamation of land for development on formerly “floodway fringe zone”. Most development in Mission Valley today originated with the CHISM agreement. In September of 1987 the City of San Diego awarded the project a Resolution of Intent and a Notice to Proceed with the First San Diego River Improvement Project. [REDACTED] In 1921,

1846-566: The Miramar Recycling Center and an interchange with Convoy Street, SR 52 intersects SR 163 , a freeway heading towards downtown San Diego. SR 52 intersects Kearny Villa Road before an interchange with I-15 . A collector/distributor road serves these three interchanges. After this interchange, the freeway leaves the edge of the military base and enters the San Diego neighborhood of Tierrasanta , where there

1917-576: The Prospect Avenue alignment to destroy fewer homes, including those in mobile home parks. On June 25, 1987, the CTC voted to support the SR ;52 extension, with the requirement that $ 4.8 million (about $ 11 million in 2023 dollars) come from local funding sources. Finally, on September 23, the City of Santee recommended the Prospect Avenue Route to the CTC. In July 1987,

1988-407: The San Diego River got together to hatch a plan to contain the 100 year/1 hour rain events. Two men, Dean Wolf (of Mission Valley Center) and Denny Martini of the Bond Ranch (who owned ¾ of Mission Valley in 1908); conceived the idea of straightening out the San Diego River to prevent "back flow" along the natural curves where flooding took place. 10 years and over a million dollars was spent developing

2059-571: The San Diego River. Planning was delayed until 1984, along with the construction of the I-805 to Santo Road segment. The City of Santee opposed the original plans, hoping to route the freeway on Prospect Avenue or north of the San Diego River. By April 1985, a second route along Prospect Avenue, proposed by Caltrans, earned the support of the City Council; however, the required demolition of many small businesses led many of those affected to start

2130-485: The Soledad Freeway would be constructed in the northern part of the canyon to minimize environmental damage. On November 9, 1966, the I-5 interchange with Ardath Road opened at the western end of what would become SR 52. The original goal was to connect the interchange with San Clemente Canyon Road, which served as a predecessor to SR 52; plans were to widen the road to four lanes and designate it as SR 52. The connecting ramps were not opened that day because

2201-465: The U.S. to protect the grants and privileges decreed under the old rule. The river travels 52 miles (84 km) from its headwaters to the ocean. The river's tributaries include: Four additional reservoirs lie in the river's watershed. Cuyamaca Reservoir is located on Boulder Creek and San Vicente Reservoir is fed by San Vicente Creek. Lake Jennings and Lake Murray are formed by the damming of canyons . The San Diego River Park Foundation

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2272-481: The additional lane was constructed in portions, the opening of the third lane between Santo Road and the existing third lane closer to I-15 was delayed; however, construction for the missing 2,100 feet (640 m) was approved in April ;2007. The extension opened on July 20, 2007. Construction on the next portion of SR 52, from Mission Gorge Road to SR 125, was scheduled to begin in late 1995, at

2343-452: The agreement. The agreement when implemented formed the largest assessment district ever put in place by the City of San Diego, and the largest Specific Plan ever adopted by the City of San Diego at that time. In short; private funding would be acquired through the issuance of bonds that were collateralized by the land on either side of the river. The funds would be used to straighten out the San Diego River. Additionally, land would be donated to

2414-437: The aluminum guard rails had not been delivered on time. Estimates indicated that each resident of La Jolla would save 80 hours per year by using Ardath Road. A ramp from southbound I-5 to westbound Ardath Road was never completed because of a hairpin turn that would be necessary due to the towering cliff on the west side of I-5 that Ardath Road ascends as it continues to La Jolla. On November 18, San Clemente Canyon Road

2485-413: The base. In 2006, construction began to add a third lane on westbound SR 52 between Mast Boulevard and Santo Road. The expansion cost $ 3.4 million (about $ 4.94 million in 2023 dollars) and was funded by the state and the county TransNet sales tax. The new lane opened on May 8, 2007; however, the widening generated complaints from angry commuters facing a "bottleneck" at Santo Road. Because

2556-410: The bay considerably. An earlier dam was overtopped in 1916, increasing the floodwaters coming down Mission Valley at the time. The Mission Bay and San Diego River jetties were built in 1948, at a time when the shore of the bay was subject to alternating periods of recession and advance. By February 1951, the river levees had been connected to the jetties. All tidal flow was confined to a new channel. Since

2627-495: The city of Santee , where SR 52 was built alongside Mission Gorge Road. SR 52 intersects the northern end of SR 125 , where SR 52 traffic can exit south onto SR 125. The freeway continues east through Santee, with interchanges at Fanita Drive, Cuyamaca Street, and Magnolia Avenue, before it comes to an end at SR 67 . SR 52 is part of the California Freeway and Expressway System and

2698-608: The city of San Diego filed suit against the Cuyamaca Water Company to establish its paramount right to the water of the San Diego River. After several court cases, the California State Supreme Court declared in 1929 that the city's right was paramount because under Spanish and Mexican laws, Pueblo San Diego was given exclusive rights to the use of the San Diego River, both surface and underground. The Treaty of Guadalupe Hidalgo obligated

2769-409: The city of San Diego to pay $ 20,000 (about $ 32,000 in 2023 dollars) to replace the signs on SR 52. The second phase of SR 52 from I-805 to 1.1 miles (1.8 km) past U.S. Route 395 (which became I-15 in 1974) was projected to cost $ 29.4 million (about $ 178 million in 2023 dollars). The new freeway was to provide access to Tierrasanta and reduce the traffic on I-8 . The U.S. Navy

2840-416: The city of Santee faced traffic snarls. A widening project was completed in 2007 between Santo Road and Mast Boulevard; further expansion has been put on hold due to state budget concerns. SR 52 begins just west of I-5 at the eastern end of La Jolla Parkway. Before entering San Clemente Canyon , part of Marian Bear Natural Park, the road becomes a freeway as it intersects I-5. The freeway runs north of

2911-467: The city. In 1998, the city began to widen Mission Gorge Road between Carlton Hills Drive and Fanita Road to handle the extra traffic from the incomplete SR 52. The year after the September 11, 2001 attacks , the military erected a fence to block a deer tunnel underneath the freeway that connected the base and Mission Trails Regional Park, since the tunnel could be used to gain unauthorized access to

California State Route 52 - Misplaced Pages Continue

2982-432: The conditions of the city permit, and the city ordered the firm to remove it. The section of I-805 from SR 52 to El Cajon Boulevard was scheduled to be dedicated on March 20, 1972. Ardath Road was renamed La Jolla Parkway on October 15, 2002, for two reasons: a nearby residential street was also named Ardath Road, and there was a desire to draw attention to this primary route to downtown La Jolla. This required

3053-409: The construction of this section on April 28, 1969. On Thursday, May 28, 1970, the Soledad Freeway opened, connecting Regents Road and Genesee Avenue with I-5; however, it did not connect to the unopened I-805. The road was built by Kasler, Ball and Yeager for $ 3.9 million (about $ 23.6 million in 2023 dollars). The construction firm deposited dirt into "an unnamed finger canyon" against

3124-464: The construction. In June 1987, the CTC staff initially recommended against allocating money for the SR 52 segment; however, SANDAG agreed to fund the project with $ 1 million (about $ 2.3 million in 2023 dollars). Residents of Santee opposed the possible routes through the city at a public forum on June 10 because of the necessary destruction of homes to build on those routes. In late June, Caltrans considered making small modifications to

3195-477: The county supervisor, a San Diego City councilman, and the mayors of La Mesa and National City wrote a letter to Brown to ask for the construction of this portion of SR 125 and other freeways, due to concerns about the types of congestion seen in Los Angeles coming to San Diego due to the incomplete freeway system. San Diego City Councilman Tom Gade wrote a telegram to Caltrans Director Adriana Gianturco about

3266-545: The delays, the Santee City Council wrote to U.S. senators Pete Wilson and Alan Cranston , asking for their assistance. Councilman Jim Bartell alleged that the issue would affect the city council elections. In March 1989, the Fish and Wildlife Service agreed to the project, on the conditions of altering the route to cross the San Diego River and pass east of the center of the town, and constructing 44 acres of additional habitat as mitigation . SANDAG voted against building

3337-424: The endangered least Bell's vireo , a songbird which faced habitat destruction, as well as those concerned with the destruction of homes and businesses for the freeway right-of-way . The extension to Mission Gorge Road opened in 1993, and SR 52 was completed to SR 125 in 1998. Funding issues delayed the completion of the entire route until 2011, more than fifty years after construction began; until then,

3408-578: The environmental concerns of Councilman Jim Bartell. Construction finally began on the four-lane section of SR 52 between Santo Road and Mission Gorge Road on July 19, 1991. The work was projected to cost $ 52 million (about $ 104 million in 2023 dollars). For environmental mitigation, a new 45-acre (0.070 sq mi) songbird habitat was constructed that cost $ 8.3 million (about $ 16.6 million in 2023 dollars). Fossils of "small foraging mammals" were discovered during construction in late 1991. The construction company, HDB Construction,

3479-579: The extension between SR 125 and SR 67 were mixed. There were reports of faster transportation through the East County area, yet commuters noted a rush hour backup at SR 125 headed westbound because there were only two lanes traveling west through the interchange. Traffic along Mission Gorge Road was reported to have decreased by 20 percent. There are plans to add one lane in each direction, as well as two reversible lanes, from I-15 to SR 125. These plans were put on hold in 2008 due to

3550-480: The freeway, thus violating the Political Reform Act as these interests exceeded $ 10,000. One of the holdings was near Cuyamaca Street, the location of an offramp on a path that he voted to support. He was fined $ 2,000 (about $ 4,100 in 2023 dollars) for each property, for a total of $ 6,000 (about $ 12,400 in 2023 dollars). In April 1990, the Santee City Council agreed to begin purchasing land, over

3621-520: The freeway; at least 60 were mobile homes. This portion was divided into three construction projects: from SR 125 to Cuyamaca Street, from there to Magnolia Avenue, and the interchange with SR 67, which began construction in mid-June 2008. The middle project had to be shut down briefly in February ;2009 due to funding issues. Completion was scheduled for 2010, but was postponed to early 2011 due to weather-related delays. This new portion

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3692-440: The greater volume of the flow was diverted into what was then known as False Bay (now referred to as Mission Bay ), leaving only a small stream still flowing into the harbor (J. C. Hayes 1874). This flood was remarkable in that no rain fell along the coast. The river was later observed to flow into San Diego Harbor in 1849 and 1856, and the U. S. Coast and Geodetic Survey map of 1859 shows it to be flowing there once again. Because of

3763-547: The harbor (San Diego Herald 1855). The worst flood in this area was in 1862. This was part of the Great Flood of 1862 , which impacted the entire Western United States , and had a bearing on the Civil War . In San Diego, Mission Valley was inundated, and houses in lower Old Town were flooded when severe winds from a sea storm from the south backed the water up from the bay into the river (Pourade 1964:250). This flood

3834-479: The high deposition rate of the river, which threatened to ruin San Diego Bay as a harbor, the federal government diverted the flow into Mission Bay and built a levee embankment, Derby Dike , of earth extending from near Old Town to Point Loma in the fall of 1853 (Derby 1853). Later that year, heavy rains caused the river to change course once again, washing out part of the levee and resuming its old course into

3905-492: The issuance of Bonds to privately finance the project. The total cost to complete the project was 36 million dollars. At this point in time the partnership was showing signs of falling apart. Robert Rodriguez and Denny Martini decided to bring all of the owners together in the same room to sign a historic agreement known as the CHSM agreement. Trammell Crow/Bruce Hazard, Conrock, Don Samis, and May Department Stores were all party to

3976-618: The mountain is carved out of "igneous granitic rocks" that are thought to be 150 million years old, an unusual formation compared to the Eocene layer. A dedicated two-way bicycle path exists on the northern side of the roadway between Santo Road and Mast Boulevard, with access possible from both termini. East of the Mast Boulevard interchange, SR 52 crosses and begins to parallel the San Diego River . The freeway enters

4047-439: The portion for $ 17 million (about $ 29.7 million in 2023 dollars). The City of Santee faced problems in the construction of the freeway from SR 125 to SR 67. As early as 1995, it was clear that the environmental impact report was delayed and that there would be funding difficulties. SANDAG allocated $ 23 million dollars (about $ 39.6 million in 2023 dollars) in 1999 to purchase properties needed for

4118-612: The possible deletions; in response, Gianturco clarified that the plans were only being reconsidered and had not been removed, and a CHC member criticized the tone of the original telegram, calling it "intemperate". In 1984, Leo Trombatore, the Caltrans Director under California governor George Deukmejian , requested to the California Transportation Commission (CTC) that "formal studies toward this end be initiated immediately. Route 52 has

4189-480: The river discharges only during flooding, the middle channel was soon completely filled. The channels were finished by 1955, after various difficulties were overcome and the jetties were considerably lengthened so that shallow bars would not form in the entrance. As San Diego’s Mission Vally grew in size, many businesses located along the banks of the San Diego River began to flood during heavy rain events. The flooding became so extreme that land owners on either side of

4260-463: The river route's $ 121 million (about $ 278 million in 2023 dollars). The city council of El Cajon publicly supported the Prospect Avenue routing; however, some employees of the City of Santee, including some city planners and engineers, were concerned that portions of the report were "outdated." The petitions were given to the CTC in May, when San Diego officials made several arguments in support of

4331-456: The route from Hollins Lake towards the golf course. Environmental concerns raised in June ;1988 related to the least Bell's vireo included decrease of insects, a darker environment after overpasses are constructed, and the fragmenting of habitat. Nevertheless, Caltrans still desired the Prospect Avenue route over concerns of a more expensive and less traveled northern route. Upset because of

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4402-537: The transportation of the East County region. Traffic decreased significantly on I-8 in early 1994, with an estimated 30,000 commuters switching from I-8 to SR 52. Fewer cars traveled on the western part of Mission Gorge Road, leading to a decrease in revenue for businesses located along that road. On Mast Boulevard and Mission Gorge Road in Santee, much more traffic was present, leading to residents complaining to

4473-593: The work began in May ;2006. Funding issues were finally resolved in 2006 with voter-approved statewide transportation bonds. In 2007, highway construction costs increased; that year, the SANDAG transportation committee voted to fund the construction, taking money from a planned reversible lanes project on SR 52. "Heavy construction" of SR 52 from SR 125 eastward to SR 67 began in February 2008. More than 360 properties were acquired to build

4544-664: Was built with state funds from the CTC. In 2000, Hazard Construction Company added a single westbound lane on SR 52 from SR 163 to I-805, a distance of 2.5 miles (4.0 km), at a cost of $ 1.7 million (about $ 2.86 million in 2023 dollars). In 2006, the Metropolitan Transit System , in cooperation with the San Diego Association of Governments (SANDAG), Caltrans, and the California Highway Patrol , began

4615-451: Was connected to I-5 when the aluminum guard rails arrived and were subsequently installed. San Clemente Canyon Road was not fully opened until 1967. That year, citizens expressed opposition to the construction of the Soledad Freeway because some wanted the land to be used for a park, and did not view the freeway as "necessary." Formal bids began in February 1969 for the first section of SR 52 between I-5 and I-805. The state ordered

4686-435: Was consulted in the planning process due to the road's proposed routing through what was then NAS Miramar that would provide a delineation against further urban development. There were no concerns expressed at the public hearing on November 17, 1970; however, construction did not begin for more than ten years, as California governor Jerry Brown stalled the construction of SR 52 from Santo Road to SR 67. In 1977,

4757-484: Was founded in 2001 and is dedicated to conserving the water, wildlife, recreation, culture and community involved with the San Diego River. The San Diego River Conservancy was established by an act of the California Legislature to preserve, restore and enhance the San Diego River area. The Conservancy is a non-regulatory agency of the state government with an independent nine-member governing board. It

4828-475: Was opened to traffic on March 29, 2011. The cost of this project was $ 525 million, funded with state and federal funds as well as TransNet revenue. The opening was predicted to reduce traffic on I-8 as well as Mission Gorge Road and other Santee thoroughfares. The official "ribbon cutting" ceremony took place on March 19, 2011 on the freeway at the Cuyamaca Street interchange. Reactions to

4899-401: Was required to keep noise below 61 decibels to protect the birds. The project was funded primarily with revenue from a voter-approved sales tax in 1987. The opening of this portion was scheduled for December 16, 1993. This new segment ended just southeast of the Mast Boulevard interchange, after the San Diego River overpass. The opening of this stretch of SR 52 had many effects on

4970-470: Was spent on the property acquisition. After weather-related construction delays due to the El Niño season of the winter of 1997–1998, the extension of SR 52 between Mission Gorge Road and SR 125 was dedicated on May 9, 1998. The eastbound lanes were scheduled to be opened a few days later, and the westbound lanes were to be opened in mid-July of that year. L.R. Hubbard Construction Company built

5041-469: Was very significant because it held its peak for over twenty-four hours. In 1876, the levee was reconstructed, and no further diversions into San Diego Bay have occurred. Since then, a considerable volume of sediment has been added to the San Diego River delta in Mission Bay from occasional floods. In 1935 El Capitan Dam was constructed 27 miles up the San Diego River; this reduced the sediment entering

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