Riverside Drive Bridge Over The Los Angeles River at the Arroyo Seco

Photos 

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Riverside Drive Bridge with Southward View up from San Fernando Road Riverside Dr. Crossing at the LA River where it meets the Arroyo Seco www.bridges-of-los-angeles-county.com View high-res version

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Lamp Post on Riverside Drive Where it Meets the Arroyo Seco Riverside Dr. crosses the LA at two spots, this one is at the Arroyo Seco. http://www.youtube.com/user/bridgesoflosangeles View high-res version

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Riverside Drive (Dayton Ave) Bridge Northeastern view of Old wooden bridge connecting Riverside Drive and Dayton Ave (now Figuroa). (CHS-44609) USC Digital Library View high-res version

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Riverside Drive (Dayton Ave) Bridge Northwestern view of Old wooden bridge connecting Riverside Drive and Dayton Ave (now Figuroa). (CHS-44662) USC Digital Library View high-res version

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Riverside Drive Bridge Over The Los Angeles River at the Arroyo Seco (1943) A northward view during a rain storm (00056795) Los Angeles Public Library

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Map of Glendale and Los Angeles Los Angeles Public Library

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Map of the Los Angeles River in 1917 The Dayton Ave Bridge is visible at the center USC Digital Archives

Map 

Description 

http://boe.lacity.org/uprs/report/ProjectInfoReport.cfm?k=1290&dmy=95114

Why the Long Name 

Riverside Drive runs parallel to the Los Angeles River for many miles, from this spot where the Los Angeles River and the Arroyo Seco meet to far into the San Fernando Valley. Riverside Drive crosses the Los Angeles River again about 10 miles north on the other side of Griffith Park where Riverside Drive crosses into Burbank.

Facts 

Overview

Warren Deck truss bridge over Los Angeles River on Riverside Drive in Los Angeles

Location

Glassel Park, California, Los Angeles County, California

Status

Open to traffic

Future prospects

The project proposes to demolish the existing bridge over the LA River, concrete approach spans over Metrolink and Ave 19 East and West roadways, and the viaduct structure (designated as Riverside Dr Viaduct, 53C-1932, W.O. E700010) nearly at 90 degrees to the river-crossing bridge. A new bridge which includes a bike path is proposed along a single, smooth curve alignment of approximately 420-ft radius. A roundabout of approximately 150-ft diameter will be constructed at the intersection of Riverside Dr and San Fernando Rd to achieve capacity enhancement through improved traffic effiency. The bridge architectural configuration, artistic railing, lighting fixtures, and decorative elements will be developed from an integral concept that is complimentary wtih the adjacent Ave 19 Bridges and the proposed Confluence Park.

History

Built 1939

Design

Warren Deck truss

Dimensions

Length of largest span: 236.9 ft.
Total length: 451.1 ft.

Also called

Dayton Street Bridge, Los Feliz Road

Approximate latitude, longitude

+34.08111, -118.22694   (decimal degrees)
34°04'52" N, 118°13'37" W   (degrees°minutes'seconds")

Approximate UTM coordinates

11/386798/3771828 (zone/easting/northing)

USGS topographic map

Los Angeles

Inventory numbers

CA 53C-160 (California bridge number)
BH 11034 (Bridgehunter.com ID)

Inspection (as of 08/2006)

Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 63.0 (out of 100)

Average daily traffic (as of 2002)

17,000

Categories 

Update Log 

• February 23, 2010: Updated by Craig Philpott: Corrected design
• January 13, 2010: Updated by David Kimbrough: Demolition and replace scheduled.
• December 29, 2009: Updated by David Kimbrough: 1209 - The bridge is now scheduled for demolision
• January 9, 2009: New photo from David Kimbrough
• January 4, 2009: New photo from David Kimbrough
• January 3, 2009: New photo from David Kimbrough
• December 19, 2008: New photos from David Kimbrough
• May 2, 2008: Essay added by David Kimbrough

Sources 

• David Kimbrough - kimbrough-photo [at] charter [dot] net
• Craig Philpott - cphilpott [at] puc [dot] edu

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