US Bridges

Nat Trails HWY over Teviot Ditch

Fair

San Bernardino County, California · 22.5 MI E Kelbaker RD · Structure no. 54C0316

Built
1948
77 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
59 ft
3 main spans
Daily traffic
502
2018 count
Owner
County
County Highway Agency

About this bridge

Nat Trails HWY over Teviot Ditch is a concrete continuous slab carrying Nat Trails HWY over Teviot Ditch in San Bernardino County, California. It was built in 1948, so it is 77 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 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 502 vehicles a day, roughly 30% of them trucks, projected to reach 574 by 2042. The structure is 59 ft (18 m) long and 30 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesNat Trails HWY
CrossesTeviot Ditch
Location22.5 MI E Kelbaker RD
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.69486, -115.30566
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span19 ft (5.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic502 (2018)
Projected traffic574 by 2042
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nat Trails HWY over Teviot Ditch built?

It was built in 1948, making it 77 years old in 2025.

What condition is Nat Trails HWY over Teviot Ditch 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 October 2024.

How much traffic does Nat Trails HWY over Teviot Ditch carry?

About 502 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is Nat Trails HWY over Teviot Ditch?

The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 30 ft wide.

Who owns Nat Trails HWY over Teviot Ditch?

It is owned by the County Highway Agency.