US Bridges

13 Dips Road over Salt Creek

Fair

Trinity County, California · 1.2 MI East of S.R. 3 · Structure no. 05C0085

Built
1951
74 years old, rebuilt 1957
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
2 main spans
Daily traffic
50
1980 count
Owner
County
County Highway Agency

About this bridge

13 Dips Road over Salt Creek is a steel stringer/multi-beam or girder carrying 13 Dips Road over Salt Creek in Trinity County, California. It was built in 1951 and reconstructed in 1957, so it is 74 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 50 vehicles a day, projected to reach 64 by 2042. The structure is 65 ft (19.8 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries13 Dips Road
CrossesSalt Creek
Location1.2 MI East of S.R. 3
RouteCounty Highway 0
Coordinates40.44697, -123.1461
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating24.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span32 ft (9.8 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1980)
Projected traffic64 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 13 Dips Road over Salt Creek built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1957.

What condition is 13 Dips Road over Salt Creek 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 June 2023.

How much traffic does 13 Dips Road over Salt Creek carry?

About 50 vehicles per day (1980 count).

How long is 13 Dips Road over Salt Creek?

The structure is 65 ft (19.8 m) long with a longest span of 32 ft (9.8 m) and a deck 20 ft wide.

Who owns 13 Dips Road over Salt Creek?

It is owned by the County Highway Agency.