US Bridges

Interstate 40 over Halfway Hills Wash

Fair

San Bernardino County, California · 08-SBD-040-R101.33 · Structure no. 54 0799L

Built
1970
55 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
272 ft
14 main spans
Daily traffic
7,500
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 40 over Halfway Hills Wash is a concrete continuous slab carrying Interstate 40 over Halfway Hills Wash in San Bernardino County, California. It was built in 1970, so it is 55 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 7,500 vehicles a day, roughly 42% of them trucks, projected to reach 15,669 by 2040. The structure is 272 ft (82.9 m) long and 41 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesInterstate 40
CrossesHalfway Hills Wash
Location08-SBD-040-R101.33
RouteInterstate 40
CountySan Bernardino County
StateCalifornia
Coordinates34.80339, -115.2927
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20
Structure length272 ft (82.9 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2018)
Projected traffic15,669 by 2040
Trucks42%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 40 over Halfway Hills Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is Interstate 40 over Halfway Hills Wash 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 2023.

How much traffic does Interstate 40 over Halfway Hills Wash carry?

About 7,500 vehicles per day (2018 count), of which roughly 42% are trucks.

How long is Interstate 40 over Halfway Hills Wash?

The structure is 272 ft (82.9 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns Interstate 40 over Halfway Hills Wash?

It is owned by the State Highway Agency.