US Bridges

Dutch Creek Road over Trinity River

Fair

Trinity County, California · 0.3 MI S of SR 299 · Structure no. 05C0070

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
315 ft
3 main spans
Daily traffic
782
2010 count
Owner
County
County Highway Agency

About this bridge

Dutch Creek Road over Trinity River is a concrete continuous box beam or girders - multiple carrying Dutch Creek Road over Trinity River in Trinity County, California. It was built in 1981, so it is 44 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 782 vehicles a day, roughly 5% of them trucks, projected to reach 839 by 2042. The structure is 315 ft (95.9 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesDutch Creek Road
CrossesTrinity River
Location0.3 MI S of SR 299
RouteCounty Highway 0
CountyTrinity County
StateCalifornia
Coordinates40.72814, -123.06257
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating79.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length315 ft (95.9 m)
Longest span120 ft (36.6 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic782 (2010)
Projected traffic839 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Dutch Creek Road over Trinity River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Dutch Creek Road over Trinity River 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 August 2023.

How much traffic does Dutch Creek Road over Trinity River carry?

About 782 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Dutch Creek Road over Trinity River?

The structure is 315 ft (95.9 m) long with a longest span of 120 ft (36.6 m) and a deck 36 ft wide.

Who owns Dutch Creek Road over Trinity River?

It is owned by the County Highway Agency.