US Bridges

State Route 91 over West Grand Blvd

Good

Riverside County, California · 08-RIV-091-5.99-COR · Structure no. 56 0445

Built
1961
64 years old, rebuilt 2017
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
323 ft
4 main spans
Daily traffic
261,000
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 91 over West Grand Blvd is a concrete continuous box beam or girders - multiple carrying State Route 91 over West Grand Blvd in Riverside County, California. It was built in 1961 and reconstructed in 2017, so it is 64 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 261,000 vehicles a day, roughly 8% of them trucks, projected to reach 306,858 by 2043. The structure is 323 ft (98.4 m) long and 301 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 91
CrossesWest Grand Blvd
Location08-RIV-091-5.99-COR
RouteState Highway 91
Coordinates33.88048, -117.57153
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
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 rating74 US tons
Inventory rating44.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length323 ft (98.4 m)
Longest span129 ft (39.3 m)
Deck width301 ft (91.6 m)
Roadway width295 ft (89.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic261,000 (2019)
Projected traffic306,858 by 2043
Trucks8%
Lanes on structure18
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 State Route 91 over West Grand Blvd built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2017.

What condition is State Route 91 over West Grand Blvd in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does State Route 91 over West Grand Blvd carry?

About 261,000 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is State Route 91 over West Grand Blvd?

The structure is 323 ft (98.4 m) long with a longest span of 129 ft (39.3 m) and a deck 301 ft wide.

Who owns State Route 91 over West Grand Blvd?

It is owned by the State Highway Agency.