US Bridges

Wildwood Road over Hayfork Creek

Fair

Trinity County, California · 2.7 MI N of SR 36 · Structure no. 05C0246

Built
2016
9 years old
Condition
Fair
inspected June 2021
Type
Slab
Prestressed Concrete Continuous
Length
162 ft
3 main spans
Daily traffic
400
2016 count
Owner
County
County Highway Agency

About this bridge

Wildwood Road over Hayfork Creek is a prestressed concrete continuous slab carrying Wildwood Road over Hayfork Creek in Trinity County, California. It was built in 2016, so it is 9 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 400 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2038. The structure is 162 ft (49.4 m) long and 35 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesWildwood Road
CrossesHayfork Creek
Location2.7 MI N of SR 36
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.40083, -123.05794
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length162 ft (49.4 m)
Longest span62 ft (18.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2016)
Projected traffic600 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wildwood Road over Hayfork Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Wildwood Road over Hayfork 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 2021.

How much traffic does Wildwood Road over Hayfork Creek carry?

About 400 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Wildwood Road over Hayfork Creek?

The structure is 162 ft (49.4 m) long with a longest span of 62 ft (18.9 m) and a deck 35 ft wide.

Who owns Wildwood Road over Hayfork Creek?

It is owned by the County Highway Agency.