US Bridges

Interstate 15 NB over BNSF RY UP RR & AMTRAK

Good

San Bernardino County, California · 08-SBD-015-31.08 · Structure no. 54 0664R

Built
1966
59 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
124 ft
5 main spans
Daily traffic
71,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over BNSF RY UP RR & AMTRAK is a concrete continuous slab carrying Interstate 15 NB over BNSF RY UP RR & AMTRAK in San Bernardino County, California. It was built in 1966, so it is 59 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 71,000 vehicles a day, roughly 14% of them trucks, projected to reach 90,000 by 2042. The structure is 124 ft (37.7 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 15 NB
CrossesBNSF RY UP RR & AMTRAK
Location08-SBD-015-31.08
RouteInterstate 15
Coordinates34.39118, -117.40837
Functional classRural Principal Arterial - Interstate

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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length124 ft (37.7 m)
Longest span31 ft (9.4 m)
Deck width68 ft (20.7 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71,000 (2022)
Projected traffic90,000 by 2042
Trucks14%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 BNSF RY UP RR & AMTRAK built?

It was built in 1966, making it 59 years old in 2025.

What condition is Interstate 15 NB over BNSF RY UP RR & AMTRAK 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 March 2024.

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

About 71,000 vehicles per day (2022 count), of which roughly 14% are trucks.

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

The structure is 124 ft (37.7 m) long with a longest span of 31 ft (9.4 m) and a deck 68 ft wide.

Who owns Interstate 15 NB over BNSF RY UP RR & AMTRAK?

It is owned by the State Highway Agency.