US Bridges

Interstate 15 NB over Mission Blvd & UP RR

Fair

Riverside County, California · 08-RIV-015-51.95 · Structure no. 56 0695R

Built
1979
46 years old, rebuilt 1987
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
350 ft
4 main spans
Daily traffic
107,000
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over Mission Blvd & UP RR is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 15 NB over Mission Blvd & UP RR in Riverside County, California. It was built in 1979 and reconstructed in 1987, so it is 46 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 107,000 vehicles a day, roughly 8% of them trucks, projected to reach 129,550 by 2043. The structure is 350 ft (106.6 m) long and 93 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesInterstate 15 NB
CrossesMission Blvd & UP RR
Location08-RIV-015-51.95
RouteInterstate 15
CountyRiverside County
StateCalifornia
Coordinates34.02843, -117.54987
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length350 ft (106.6 m)
Longest span107 ft (32.7 m)
Deck width93 ft (28.4 m)
Roadway width90 ft (27.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107,000 (2017)
Projected traffic129,550 by 2043
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 15 NB over Mission Blvd & UP RR built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 1987.

What condition is Interstate 15 NB over Mission Blvd & UP RR 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 June 2024.

How much traffic does Interstate 15 NB over Mission Blvd & UP RR carry?

About 107,000 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is Interstate 15 NB over Mission Blvd & UP RR?

The structure is 350 ft (106.6 m) long with a longest span of 107 ft (32.7 m) and a deck 93 ft wide.

Who owns Interstate 15 NB over Mission Blvd & UP RR?

It is owned by the State Highway Agency.