US Bridges

State Route 58 over Ambos Wash

Good

San Bernardino County, California · 08-SBD-058-R11.89 · Structure no. 54 1119

Built
1992
33 years old, rebuilt 2020
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
14,400
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 58 over Ambos Wash is a concrete culvert carrying State Route 58 over Ambos Wash in San Bernardino County, California. It was built in 1992 and reconstructed in 2020, so it is 33 years old, younger 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 14,400 vehicles a day, roughly 50% of them trucks, projected to reach 20,000 by 2040. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesState Route 58
CrossesAmbos Wash
Location08-SBD-058-R11.89
RouteState Highway 58
CountySan Bernardino County
StateCalifornia
Coordinates34.95786, -117.43414
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 loadUnknown
Structure length27 ft (8.2 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 traffic14,400 (2020)
Projected traffic20,000 by 2040
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 State Route 58 over Ambos Wash built?

It was built in 1992, making it 33 years old in 2025. It was reconstructed in 2020.

What condition is State Route 58 over Ambos Wash 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 April 2023.

How much traffic does State Route 58 over Ambos Wash carry?

About 14,400 vehicles per day (2020 count), of which roughly 50% are trucks.

How long is State Route 58 over Ambos Wash?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns State Route 58 over Ambos Wash?

It is owned by the State Highway Agency.