US Bridges

Route 91 over University Avenue

Fair

Riverside County, California · 08-RIV-091-20.45-RIV · Structure no. 56 0314

Built
1957
68 years old, rebuilt 2003
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
108 ft
1 main span
Daily traffic
191,000
2019 count
Owner
State
State Highway Agency

About this bridge

Route 91 over University Avenue is a steel stringer/multi-beam or girder carrying Route 91 over University 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 191,000 vehicles a day, roughly 5% of them trucks, projected to reach 245,500 by 2041. The structure is 108 ft (32.9 m) long and 156 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 91
CrossesUniversity Avenue
Location08-RIV-091-20.45-RIV
RouteState Highway 91
Coordinates33.97968, -117.37007
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating19 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span104 ft (31.7 m)
Deck width156 ft (47.5 m)
Roadway width151 ft (46 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic191,000 (2019)
Projected traffic245,500 by 2041
Trucks5%
Lanes on structure11
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 University 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 University 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 October 2023.

How much traffic does Route 91 over University Avenue carry?

About 191,000 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Route 91 over University Avenue?

The structure is 108 ft (32.9 m) long with a longest span of 104 ft (31.7 m) and a deck 156 ft wide.

Who owns Route 91 over University Avenue?

It is owned by the State Highway Agency.