US Bridges

Main ST-15 On-Ramp over East Grand Blvd

Fair

Riverside County, California · 08-RIV-091-6.68-COR · Structure no. 56 0876

Built
2017
8 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
5,000
2017 count
Owner
State
State Highway Agency

About this bridge

Main ST-15 On-Ramp over East Grand Blvd is a prestressed concrete box beam or girders - multiple carrying Main ST-15 On-Ramp over East Grand Blvd 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 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 5,000 vehicles a day, roughly 2% of them trucks, projected to reach 10,236 by 2045. The structure is 106 ft (32.2 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMain ST-15 On-Ramp
CrossesEast Grand Blvd
Location08-RIV-091-6.68-COR
RouteState Highway 91
CountyRiverside County
StateCalifornia
Coordinates33.87888, -117.56015
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 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

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.2 m)
Longest span102 ft (31 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic5,000 (2017)
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 Main ST-15 On-Ramp over East Grand Blvd built?

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

What condition is Main ST-15 On-Ramp over East Grand Blvd 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 February 2025.

How much traffic does Main ST-15 On-Ramp over East Grand Blvd carry?

About 5,000 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Main ST-15 On-Ramp over East Grand Blvd?

The structure is 106 ft (32.2 m) long with a longest span of 102 ft (31 m) and a deck 39 ft wide.

Who owns Main ST-15 On-Ramp over East Grand Blvd?

It is owned by the State Highway Agency.