US Bridges

Onaga Trail over Hospital Wash

Fair

San Bernardino County, California · 0.5 MI E Acoma Trail · Structure no. 54C0590

Built
1986
39 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
3,060
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Onaga Trail over Hospital Wash is a concrete culvert carrying Onaga Trail over Hospital Wash in San Bernardino County, California. It was built in 1986, so it is 39 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 6 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 3,060 vehicles a day, roughly 1% of them trucks, projected to reach 4,177 by 2041. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOnaga Trail
CrossesHospital Wash
Location0.5 MI E Acoma Trail
RouteCounty Highway 0
Coordinates34.11202, -116.43149
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,060 (2016)
Projected traffic4,177 by 2041
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Onaga Trail over Hospital Wash built?

It was built in 1986, making it 39 years old in 2025.

What condition is Onaga Trail over Hospital 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 July 2023.

How much traffic does Onaga Trail over Hospital Wash carry?

About 3,060 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Onaga Trail over Hospital Wash?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Onaga Trail over Hospital Wash?

It is owned by the Town or Township Highway Agency.