US Bridges

Interstate 15 over BNSF RY & UP RR

Fair

San Bernardino County, California · 08-SBD-015-R22.67 · Structure no. 54 0797

Built
1969
56 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
76 ft
1 main span
Daily traffic
162,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 over BNSF RY & UP RR is a concrete box beam or girders - multiple carrying Interstate 15 over BNSF RY & UP RR in San Bernardino County, California. It was built in 1969, so it is 56 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 162,000 vehicles a day, roughly 14% of them trucks, projected to reach 180,000 by 2045. The structure is 76 ft (23.2 m) long and 195 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesInterstate 15
CrossesBNSF RY & UP RR
Location08-SBD-015-R22.67
RouteInterstate 15
CountySan Bernardino County
StateCalifornia
Coordinates34.329, -117.48195
Functional classRural 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 inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating110 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length76 ft (23.2 m)
Longest span68 ft (20.7 m)
Deck width195 ft (59.4 m)
Roadway width152 ft (46.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162,000 (2022)
Projected traffic180,000 by 2045
Trucks14%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed11.2 mi (18 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 over BNSF RY & UP RR built?

It was built in 1969, making it 56 years old in 2025.

What condition is Interstate 15 over BNSF RY & 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 May 2024.

How much traffic does Interstate 15 over BNSF RY & UP RR carry?

About 162,000 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Interstate 15 over BNSF RY & UP RR?

The structure is 76 ft (23.2 m) long with a longest span of 68 ft (20.7 m) and a deck 195 ft wide.

Who owns Interstate 15 over BNSF RY & UP RR?

It is owned by the State Highway Agency.