US Bridges

Interstate 15 NB over Mojave River (baker)

Good

San Bernardino County, California · 08-SBD-015-R136.13 · Structure no. 54 0278R

Built
1965
60 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
400 ft
17 main spans
Daily traffic
19,500
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 15 NB over Mojave River (baker) is a concrete continuous slab carrying Interstate 15 NB over Mojave River (baker) in San Bernardino County, California. It was built in 1965, so it is 60 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 19,500 vehicles a day, roughly 20% of them trucks, projected to reach 23,400 by 2041. The structure is 400 ft (121.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 15 NB
CrossesMojave River (baker)
Location08-SBD-015-R136.13
RouteInterstate 15
Coordinates35.25926, -116.07933
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span24 ft (7.3 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2019)
Projected traffic23,400 by 2041
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 15 NB over Mojave River (baker) built?

It was built in 1965, making it 60 years old in 2025.

What condition is Interstate 15 NB over Mojave River (baker) 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 December 2023.

How much traffic does Interstate 15 NB over Mojave River (baker) carry?

About 19,500 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Interstate 15 NB over Mojave River (baker)?

The structure is 400 ft (121.9 m) long with a longest span of 24 ft (7.3 m) and a deck 34 ft wide.

Who owns Interstate 15 NB over Mojave River (baker)?

It is owned by the State Highway Agency.