US Bridges

Wildwood Road over Hayfork Creek

Fair

Trinity County, California · 3.7 MI South of S.R. 3 · Structure no. 05C0131

Built
1945
80 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
156 ft
2 main spans
Daily traffic
330
2000 count
Owner
County
County Highway Agency

About this bridge

Wildwood Road over Hayfork Creek is a steel stringer/multi-beam or girder carrying Wildwood Road over Hayfork Creek in Trinity County, California. It was built in 1945, so it is 80 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 330 vehicles a day, roughly 39% of them trucks, projected to reach 533 by 2042. The structure is 156 ft (47.5 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesWildwood Road
CrossesHayfork Creek
Location3.7 MI South of S.R. 3
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.51926, -123.08548
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
Deck7 GoodSome minor problems.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadUnknown
Structure length156 ft (47.5 m)
Longest span61 ft (18.6 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2000)
Projected traffic533 by 2042
Trucks39%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wildwood Road over Hayfork Creek built?

It was built in 1945, making it 80 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 May 2024.

How much traffic does Wildwood Road over Hayfork Creek carry?

About 330 vehicles per day (2000 count), of which roughly 39% are trucks.

How long is Wildwood Road over Hayfork Creek?

The structure is 156 ft (47.5 m) long with a longest span of 61 ft (18.6 m) and a deck 28 ft wide.

Who owns Wildwood Road over Hayfork Creek?

It is owned by the County Highway Agency.