US Bridges

Route 91 over Central Avenue

Fair

Riverside County, California · 08-RIV-091-18.41-RIV · Structure no. 56 0356

Built
1957
68 years old, rebuilt 2003
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
1 main span
Daily traffic
192,000
2019 count
Owner
State
State Highway Agency

About this bridge

Route 91 over Central Avenue is a steel stringer/multi-beam or girder carrying Route 91 over Central Avenue in Riverside County, California. It was built in 1957 and reconstructed in 2003, so it is 68 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 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 192,000 vehicles a day, roughly 5% of them trucks, projected to reach 240,721 by 2040. The structure is 117 ft (35.6 m) long and 164 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 91
CrossesCentral Avenue
Location08-RIV-091-18.41-RIV
RouteState Highway 91
Coordinates33.95348, -117.38366
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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length117 ft (35.6 m)
Longest span113 ft (34.4 m)
Deck width164 ft (50 m)
Roadway width159 ft (48.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic192,000 (2019)
Projected traffic240,721 by 2040
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 Route 91 over Central Avenue built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2003.

What condition is Route 91 over Central Avenue 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 April 2023.

How much traffic does Route 91 over Central Avenue carry?

About 192,000 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Route 91 over Central Avenue?

The structure is 117 ft (35.6 m) long with a longest span of 113 ft (34.4 m) and a deck 164 ft wide.

Who owns Route 91 over Central Avenue?

It is owned by the State Highway Agency.