Commodore Schuyler F. Heim Bridge Explained

Commodore Schuyler F. Heim Bridge
Coordinates:33.7661°N -118.2397°W
Crosses:Cerritos Channel,
Port of Los Angeles
Locale:Wilmington, California
Id:53-2618
Id Type:NBI
Design:Through-truss vertical-lift bridge
Length:700feet (4,000 ft including approach viaducts)
Width:81feet (including 75 ft for the six traffic lanes)
Height:236feet tall (186feet above roadway)
Mainspan:240feet
Clearance Below:175feet fully raised
Lanes:6
Open:January 10, 1948
Closed:October 12, 2015

The Commodore Schuyler F. Heim Bridge was a vertical-lift bridge in the Port of Los Angeles. Dedicated on January 10, 1948,[1] the bridge allowed State Route 47 (the Terminal Island Freeway) to cross over the Cerritos Channel. Named after Schuyler F. Heim, who was in command of the Naval Air Station on Terminal Island in 1942, the bridge was one of the largest vertical-lift bridges on the West Coast.[2] At the time of its opening, it was the highest in the country with the deck weighing about 820ST.[3] Its towers are 186feet tall above the roadway deck and about 236feet tall when measured from the water level at high water. The bridge was decommissioned on October 12, 2015 and replaced by a new, six-lane fixed-span bridge in order to meet current safety and earthquake standards. A replacement bridge, tentatively titled State Route 47 Schuyler Heim Bridge Replacement, was completed in September 2020.[4] [5] [6]

History

Early connections to Terminal Island

The San Pedro, Los Angeles and Utah Railroad was incorporated on October 8, 1887 with the goal to build a line from Rattlesnake Island (renamed Terminal Island by 1897)[7] on the east side of San Pedro Bay to Utah.[8] The same "English syndicate" which had purchased Catalina Island was said to have secured the right-of-way between Los Angeles and Rattlesnake Island in 1889, with plans to have the rail line operated by the Santa Fe.[9] However, the Los Angeles Terminal Railway, which had purchased Rattlesnake Island and the right-of-way by 1890,[10] was the first to build tracks on the island, completing the line along the western and northern sides of the island to Long Beach on November 7, 1891, as the start of a planned transcontinental route.[11] [12] The line included a 1000adj=midNaNadj=mid pile bridge spanning the mouth of the Los Angeles River,[13] near the present site of the Gerald Desmond Bridge.

Since the trestle bridge effectively blocked marine traffic from passing through the east end of Cerritos Slough,[14] the War Department ordered the Salt Lake Railroad to demolish it in 1906.[15] Although a 3300adj=midNaNadj=mid tunnel was proposed as a replacement in February 1907,[16] the Salt Lake had already applied to replace the fixed trestle span with a drawbridge in September 1906.[17] The location for the new drawbridge was set in May 1907,[18] and the first piles were driven in December 1907.[19] The bridge was completed in 1908 as a Scherzer Rolling Lift Bridge.[20] [21] [22]

As port traffic increased, plans to widen Cerritos Slough to were advanced in 1914,[23] connecting the Port of Los Angeles to the Port of Long Beach. However, the widened channel would require the newly-renamed Salt Lake Railroad to move its tracks on Terminal Island and remove its 1908 bridge. After several years of negotiation, a compromise was reached.[24] [25] After widening, the waterway was renamed Cerritos Channel. As part of the compromise, in exchange for Salt Lake moving its tracks and ceding land to accommodate the widened channel, the city took on obligations to reconstruct wharves and build a replacement bridge.[26] That replacement bridge was completed in 1924 as the Badger Avenue Bridge (later renamed to Henry Ford Bridge), a double-leaf bascule bridge wide enough to accommodate two railroad tracks and two lanes for road traffic.[27] The 1908 bridge was moved to Washington State in 1934, where it is still in use as a bridge for BNSF Railway over the Cowlitz River near its mouth at Longview.[28]

Despite these early rail bridges, a road bridge was keenly desired by residents of Terminal Island, who had asked for a wagon bridge in 1894[29] and again in 1906.[30]

1948 Schuyler Heim vertical-lift bridge

1924 also saw work begin on a Naval Air Base San Pedro at Terminal Island.[31] Port traffic continued to increase and the United States Navy began to expand its presence on Terminal Island in the early 1940s, including an expanded air base. Expansion plans for the Navy called for more workers than could be accommodated over the Henry Ford Bridge, so the Navy commissioned a new road bridge in 1941. Construction on the bridge began in 1946. The Chief Engineer for the project until October 1947 was H. E. Wilson. The bridge was named in honor of Commodore Schuyler Franklin Heim, who was in command of the Naval Air Station on Terminal Island in 1942.

The state of California took over operation of the bridge from the city of Los Angeles in 1964.[3] As of 1988, the bridge was being raised frequently, about 8,500 times per year.[3]

Replacement fixed-span bridge

The State Route 47 Schuyler Heim Bridge Replacement project replaced the liftspan portion of the original bridge with a fixed-span bridge. The replacement bridge has a total of six lanes for vehicular traffic, three in each direction, and span . The new bridge will allow for a permanently navigable shipping channel, 180feet wide with a vertical clearance of 47feet. Construction was expected to complete in early 2017,[32] but was delayed to late 2020.[33]

Although the vertical clearance is being reduced from with the 1948 lift bridge raised to with the replacement fixed bridge, the lift bridge was already unable to accommodate large cargo ship traffic. Work on the replacement bridge began in 2011 and was finished in September 2020.[34] [35]

Design

The deck of the bridge was an open grid design to decrease weight and ease lifting of the bridge to allow ship traffic to pass underneath. The bridge used >400adj=midNaNadj=mid counterweights to lift the deck span portion to allow tall-masted vessels underneath.[36]

State Route 47 and the connecting State Route 103 are heavily used by trucks to bypass part of the crowded Interstate 710 freeway. Due to the large amount of heavy truck traffic over the bridge, the deck was subject to excessive wear. The deck was completely replaced in 1997 but was still under extreme distress. The California Department of Transportation (Caltrans) installed eight experimental fiber reinforced polymer (FRP) panels and attached sensors to test stress, load bearing, and temperature variations of the panels to determine their effectiveness as a permanent replacement.[37] Chicago-based engineering firm CTLGroup installed strain gages and thermocouples within the layers of the FRP. Each month, technicians perform a remote static load test of the bridge, providing direction to onsite Caltrans staff while monitoring real-time data from the firm's Chicago office.

In popular culture

See also

External links

Notes and References

  1. "High Lift Bridge Dedicated at Terminal Island", Los Angeles Times, January 11, 1948, p. 14.
  2. HAER no. CA-HEIM: Commodore Schuyler F. Heim Bridge. Historic American Engineering Record. Christina Chiang. Jeremy Hollins. Melanie Lytle. January 2011. National Park Service. 713657277. 2013-05-26. 2016-03-04. https://web.archive.org/web/20160304110714/http://www.acta.org/projects/pdf/Written_Historical_Data.pdf. dead.
  3. News: Woodyard. Chris. Caltrans Begins $2-Million Project to Shore Up Aging Drawbridge in Harbor. Los Angeles Times. October 27, 1988. May 26, 2013.
  4. Web site: Schuyler Heim Bridge Project Fact Sheet. Caltrans District 7. 22 February 2017. https://web.archive.org/web/20170209165228/http://www.dot.ca.gov/d7/projects/docs/101/Judys%20heim2.pdf. 9 February 2017. en. August 2013. [...] expected to complete in early 2017.. dead.
  5. Web site: State Route 47 Schuyler Heim Bridge Replacement. Caltrans District 7. 22 February 2017. https://web.archive.org/web/20161204233548/http://www.dot.ca.gov/dist07/travel/projects/details.php?id=28. 4 December 2016. en. Construction, which began in late 2011, was anticipated to complete in 2017.. dead.
  6. https://www.presstelegram.com/2020/09/04/new-heim-bridge-comes-online-in-los-angeles-long-beach-port-complex/ New Heim Bridge comes online in Los Angeles, Long Beach port complex
  7. News: South California railroads . . 25 April 1897 . Los Angeles Herald . 26 . 207 . 14 November 2016 . In 1891 the main line of the system was constructed from Los Angeles to Terminal Island (formerly Rattlesnake island), on the east side of San Pedro harbor. This line is 21 miles in length and passes through a very rich country that is being rapidly developed. This main line passes through Long Beach..
  8. News: Local Railways: Incorporation of an Important Line at Los Angeles . . 9 October 1887 . Daily Alta . 42 . 13918 . 14 November 2016.
  9. News: Los Angeles Items: An English Syndicate Astonishes the Southern Californians . . 9 November 1889 . Sacramento Daily Union . 62 . 69 . 14 November 2016.
  10. News: The New Railroad. Who is Backing the Los Angeles and Glendale . . 29 August 1890 . Los Angeles Herald . 34 . 136 . 14 November 2016.
  11. News: The Terminal: Yesterday's Opening of the Long Beach Branch . . 8 November 1891 . Los Angeles Herald . 37 . 19 . 14 November 2016.
  12. News: Hints to investors in realty . . 8 November 1891 . 37 . 19 . Los Angeles Herald . 14 November 2016.
  13. News: The Railroads: Some points about the construction of the terminal . . 18 May 1891 . Los Angeles Herald . 36 . 31 . 14 November 2016.
  14. News: Rare treat is given admirals . . 21 April 1908 . Los Angeles Herald . 35 . 202 . 15 November 2016 . When the white man first came to this locality the Los Angeles river, augmented by the San Gabriel, was occupying its present bed and discharging through the present mouth at Long Beach, some fuor [sic] miles northeast of the outer end of the breakwater. Between that mouth and San Pedro there is an island of sand formed by the wind and waves, formerly called Rattlesnake island but now known as Terminal island. Between this island and the main land (half to one and a half miles distant) is Wilmington lagoon. This lagoon is shallow in most places, with deeper channels running in all directions, one of which forming in part Terminal island connects with the mouth of the Los Angeles river.
    The Los Angeles river maintained its entrance to the sea until about 1892, when it was closed by the Terminal Railroad company to prevent washing out of its trestle. This mouth, however is now being opened and a draw bridge constructed over it, thereby restoring the old eastern entrance to San Pedro harbor..
  15. News: Railroad bridge is to be removed . . 12 December 1906 . San Francisco Call . 101 . 12 . 15 November 2016.
  16. News: Prefer tunnel to drawbridge . . 10 February 1907 . Los Angeles Herald . 34 . 132 . 15 November 2016.
  17. News: Would build a drawbridge . . 6 September 1906 . Los Angeles Herald . 33 . 341 . 15 November 2016.
  18. News: Notes from Long Beach . . 30 May 1907 . Los Angeles Herald . 34 . 241 . 15 November 2016.
  19. News: Piles being driven for new drawbridge . . 12 December 1907 . Los Angeles Herald . 35 . 71 . 15 November 2016.
  20. Scherzer Rolling Lift Bridges . 20 March 1908 . The Railway Age . 45 . 455–456. Work is also being pushed on the long span double-track bridge for the San Pedro Los Angeles & Salt Lake now under construction across the San Gabriel river at Long Beach, Cal..
  21. News: Plan active fight for better harbor . . 9 October 1908 . Los Angeles Herald . 36 . 8 . 15 November 2016.
  22. News: Whole harbor at San Pedro is inspected . . 20 April 1909 . Los Angeles Herald . 36 . 201 . 15 November 2016.
  23. News: Army board says move back port R.R. track . 25 March 1914 . Los Angeles Herald . 14 November 2016.
  24. News: Reach agreement on harbor track removal . . 11 March 1918 . Los Angeles Herald . 14 November 2016.
  25. News: $1,200,000 plan in port row considered . . 28 October 1920 . Los Angeles Herald . 15 November 2016.
  26. News: Engineer City Council Approves Salt Lake Ry. Harbor Contract . . 28 February 1921 . Los Angeles Herald . 14 November 2016.
  27. Web site: Badger Avenue Bridge (part 3) . . 2004 . Port of Los Angeles History . 15 November 2016 . https://web.archive.org/web/20040908031256/http://www.laporthistory.org/level3/badger_3.html . 8 September 2004 . dead.
  28. Web site: BNSF — Cowlitz River Bridge . . 29 April 2015 . Bridgehunter . 15 November 2016.
  29. News: Terminal Island: A Dance Pavilion to Be Built . . 22 July 1894 . Los Angeles Herald . 42 . 102 . 15 November 2016.
  30. News: Ask roads to co-operate . . 12 July 1906 . Los Angeles Herald . 33 . 285 . 15 November 2016.
  31. News: California news briefs . . 10 October 1924 . Livermore Journal . 6 . 4 . 15 November 2016 . Construction work on a naval air base on Terminal island, on the harbor at San Pedro, has started. More than 500 enlisted men, about forty officers and two divisions of navy aircraft will be stationed at the new base..
  32. Web site: State Route 47 Schuyler Heim Bridge Replacement. Caltrans District 7. 22 February 2017. https://web.archive.org/web/20161204233548/http://www.dot.ca.gov/dist07/travel/projects/details.php?id=28. 4 December 2016. en. The new bridge will provide a permanent navigable channel that is 180 feet wide with a vertical clearance of 47feet to allow for the passage of ships. With the elimination of the lift, traffic will no longer be delayed due to passing ships. Replacing the lift-span bridge with a fixed-span bridge that meets current seismic standards will improve safety and benefit the local, state and national economy and internation [sic] trade.. dead.
  33. News: $247M Caltrans Project Replaces Historic Bridge . Harvey, Chuck . September 12, 2018 . Construction Equipment Guide . 4 December 2019.
  34. News: Terminal Island's Other Bridge Project . October 1, 2013 . Port of Long Beach . 4 December 2019.
  35. https://www.youtube.com/watch?v=TTRvZPi_jZg New Commodore Schuyler F. Heim Bridge Opens
  36. "Port of Los Angeles" Web site: CA-103 Commodore Schuyler F. Heim/Henry Ford Bridge . . 2016 . Port of Los Angeles . 14 November 2016.
  37. Web site: Schuyler Heim Bridge Deck Instrumentation. CTLGroup. April 27, 2006. https://web.archive.org/web/20110708212728/http://www.ctlgroup.com/ClientsAndProjects/Project/Detail/131. July 8, 2011. dead.
  38. Web site: Inception film locations. . 2010 . Movie Locations guide: film locations around the world, with travel and visiting details.

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