US Bridges

Natnl Trails HWY over Mojave River

Fair

San Bernardino County, California · 2.5 MI North of I-15 · Structure no. 54C0068

Built
1930
95 years old
Condition
Fair
inspected January 2024
Type
Truss - Thru
Steel
Length
575 ft
1 main span
Daily traffic
9,040
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Natnl Trails HWY over Mojave River is a steel truss - thru carrying Natnl Trails HWY over Mojave River in San Bernardino County, California. It was built in 1930, so it is 95 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 9,040 vehicles a day, roughly 7% of them trucks, projected to reach 8,257 by 2044. The structure is 575 ft (175.2 m) long and 37 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesNatnl Trails HWY
CrossesMojave River
Location2.5 MI North of I-15
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.57332, -117.32199
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating48.2 US tons
Inventory rating28.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 15
Structure length575 ft (175.2 m)
Longest span270 ft (82.3 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic9,040 (2014)
Projected traffic8,257 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Natnl Trails HWY over Mojave River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Natnl Trails HWY over Mojave River 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 January 2024.

How much traffic does Natnl Trails HWY over Mojave River carry?

About 9,040 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is Natnl Trails HWY over Mojave River?

The structure is 575 ft (175.2 m) long with a longest span of 270 ft (82.3 m) and a deck 37 ft wide.

Who owns Natnl Trails HWY over Mojave River?

It is owned by the City or Municipal Highway Agency.