US Bridges

Oak Ave over Hayfork Creek

Fair

Trinity County, California · 0.39 MI S SR3 · Structure no. 05C0226

Built
2004
21 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
197 ft
2 main spans
Daily traffic
260
2000 count
Owner
County
County Highway Agency

About this bridge

Oak Ave over Hayfork Creek is a prestressed concrete continuous box beam or girders - multiple carrying Oak Ave over Hayfork Creek in Trinity County, California. It was built in 2004, so it is 21 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 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 260 vehicles a day, roughly 3% of them trucks, projected to reach 426 by 2042. The structure is 197 ft (60 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesOak Ave
CrossesHayfork Creek
Location0.39 MI S SR3
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.54853, -123.17062
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length197 ft (60 m)
Longest span110 ft (33.6 m)
Deck width43 ft (13.2 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2000)
Projected traffic426 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Oak Ave over Hayfork Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Oak Ave 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 Oak Ave over Hayfork Creek carry?

About 260 vehicles per day (2000 count), of which roughly 3% are trucks.

How long is Oak Ave over Hayfork Creek?

The structure is 197 ft (60 m) long with a longest span of 110 ft (33.6 m) and a deck 43 ft wide.

Who owns Oak Ave over Hayfork Creek?

It is owned by the County Highway Agency.