US Bridges

Telegraph RD over San Gabriel Riv

Fair

Los Angeles County, California · 0.2MI W/O I-605 Fwy · Structure no. 53C0057

Built
1937
88 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete Continuous
Length
423 ft
8 main spans
Daily traffic
44,300
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Telegraph RD over San Gabriel Riv is a concrete continuous tee beam carrying Telegraph RD over San Gabriel Riv in Los Angeles County, California. It was built in 1937, so it is 88 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 44,300 vehicles a day, roughly 3% of them trucks, projected to reach 53,160 by 2043. The structure is 423 ft (129 m) long and 54 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTelegraph RD
CrossesSan Gabriel Riv
Location0.2MI W/O I-605 Fwy
RouteCity Street 0L165
Coordinates33.95081, -118.0947
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating16.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length423 ft (129 m)
Longest span63 ft (19.2 m)
Deck width54 ft (16.4 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,300 (2017)
Projected traffic53,160 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Telegraph RD over San Gabriel Riv built?

It was built in 1937, making it 88 years old in 2025.

What condition is Telegraph RD over San Gabriel Riv in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does Telegraph RD over San Gabriel Riv carry?

About 44,300 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Telegraph RD over San Gabriel Riv?

The structure is 423 ft (129 m) long with a longest span of 63 ft (19.2 m) and a deck 54 ft wide.

Who owns Telegraph RD over San Gabriel Riv?

It is owned by the City or Municipal Highway Agency.