Seventh Street over the Los Angeles Rivers
Photos
 |
Seventh Street Bridge Southward view from the riverbed beneath the Sixth Street Bridge www.bridges-of-los-angeles-county.com |
 |
Deck and Ballustrade from west end Eastward view from sidewalk www.youtube.com/users/bridgesoflosangeles |
 |
Detail of the Seventh Street Bridge Northeast view from the deck of the bridge http://eng.lacity.org/projects/bridge/historical_gallery/ |
 |
Construction Plans Los Angeles City Bureau of Engineering |
 |
Old Seventh Street Bridge Undated photo (00009394) Los Angeles Public Library |
 |
Collapse of the Old 7th Street Bridge in 1914 Northward view from west abutment (00019289) Los Angeles Public Library |
 |
Collapse of the Old 7th Street Bridge in 1914 Eastward view form westbank (00019290) Los Angeles Public Library |
The Singe Double Decked Bridge
Written by David KimbroughThis bridge was built in two stages. In 1910 the lower level was built at grade to allow trolleys across the river, which was unlined and much lower than now due to the LA River being on open quarry for aggregate mining. In in mid-1920's it was decided to raise the bridge above grade as the trolley and automobile traffic was at 90o to the freight traffic going north south. Rather than demolish the bridge, they simply built on top of the existing bridge. The second deck is above the first and the same columns were used. Despite appearances, it is not a true double decked bridge as the lower deck is not connected to either bank. All traffic goes on the top deck.
http://eng.lacity.org/projects/bridge/historical_gallery/
www.preservela.com/index.php?option=com_content&task=view&id=241&Itemid=37
Facts
- Overview
- Concrete arch bridge over Los Angeles River on Seventh Street in Los Angeles
- Location
- Los Angeles, Los Angeles County, California
- Status
- Open to traffic
- History
- Built 1910, Second Deck added 1927, Seismic Retrofit 1995
- Builders
- - Lang & Bergstrom
- Merrill Butler
- Design
- Arch
- Dimensions
-
Length of largest span: 91.9 ft.
Total length: 1,000.0 ft.
Deck width: 56.1 ft.
- Recognition
- Eligible for the National Register of Historic Places
- Approximate latitude, longitude
- +34.03444, -118.22639 (decimal degrees)
34°02'04" N, 118°13'35" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 11/386788/3766653 (zone/easting/northing)
- USGS topographic map
- Los Angeles
- Inventory numbers
- CA 53C-1321 (California bridge number)
BH 11044 (Bridgehunter.com ID) - Inspection (as of 04/2005)
- Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 90.4 (out of 100) - Average daily traffic (as of 2000)
- 25,000
Update Log
- January 3, 2009: New photos from David Kimbrough
- November 3, 2008: New photo from David Kimbrough
- June 6, 2008: Essay added by David Kimbrough
- May 27, 2008: New photo from David Kimbrough
- May 23, 2008: New photos from David Kimbrough
Sources
- David Kimbrough - kimbrough-photo [at] charter [dot] net