US Bridges

State Route 91 over Alameda Santa Fe UP RR

Fair

Los Angeles County, California · 07-LA-091-R10.19-COM · Structure no. 53 2235

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,270 ft
2 main spans
Daily traffic
210,000
2015 count
Owner
State
State Highway Agency

About this bridge

State Route 91 over Alameda Santa Fe UP RR is a prestressed concrete continuous box beam or girders - multiple carrying State Route 91 over Alameda Santa Fe UP RR in Los Angeles County, California. It was built in 1974, so it is 51 years old, younger 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 5 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 210,000 vehicles a day, roughly 6% of them trucks, projected to reach 207,782 by 2040. The structure is 1,270 ft (387.2 m) long and 148 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 91
CrossesAlameda Santa Fe UP RR
Location07-LA-091-R10.19-COM
RouteState Highway 91
CountyLos Angeles County
StateCalifornia
Coordinates33.87333, -118.21807
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+8 approach)
Design loadHS 20
Structure length1,270 ft (387.2 m)
Longest span160 ft (48.9 m)
Deck width148 ft (45.1 m)
Roadway width143 ft (43.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210,000 (2015)
Projected traffic207,782 by 2040
Trucks6%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 91 over Alameda Santa Fe UP RR built?

It was built in 1974, making it 51 years old in 2025.

What condition is State Route 91 over Alameda Santa Fe UP RR 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 June 2023.

How much traffic does State Route 91 over Alameda Santa Fe UP RR carry?

About 210,000 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is State Route 91 over Alameda Santa Fe UP RR?

The structure is 1,270 ft (387.2 m) long with a longest span of 160 ft (48.9 m) and a deck 148 ft wide.

Who owns State Route 91 over Alameda Santa Fe UP RR?

It is owned by the State Highway Agency.