US Bridges

W 91 Off-Ramp over Prado RD & Rail Road

Good

Riverside County, California · 08-RIV-091-R1.04-COR · Structure no. 56 0865K

Built
2017
8 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
940 ft
5 main spans
Daily traffic
5,371
2018 count
Owner
State
State Highway Agency

About this bridge

W 91 Off-Ramp over Prado RD & Rail Road is a prestressed concrete box beam or girders - multiple carrying W 91 Off-Ramp over Prado RD & Rail Road in Riverside County, California. It was built in 2017, so it is 8 years old, younger 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 5,371 vehicles a day, roughly 2% of them trucks, projected to reach 10,236 by 2045. The structure is 940 ft (286.5 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW 91 Off-Ramp
CrossesPrado RD & Rail Road
Location08-RIV-091-R1.04-COR
RouteState Highway 91
Coordinates33.87928, -117.65828
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length940 ft (286.5 m)
Longest span205 ft (62.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,371 (2018)
Projected traffic10,236 by 2045
Trucks2%
Lanes on structure2
Traffic directionOne-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 W 91 Off-Ramp over Prado RD & Rail Road built?

It was built in 2017, making it 8 years old in 2025.

What condition is W 91 Off-Ramp over Prado RD & Rail Road 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 W 91 Off-Ramp over Prado RD & Rail Road carry?

About 5,371 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is W 91 Off-Ramp over Prado RD & Rail Road?

The structure is 940 ft (286.5 m) long with a longest span of 205 ft (62.5 m) and a deck 39 ft wide.

Who owns W 91 Off-Ramp over Prado RD & Rail Road?

It is owned by the State Highway Agency.