US Bridges

Parks Creek over Little Trinity River

Good

Trinity County, California · No Data Entered · Structure no. 051459000001039

Built
1974
51 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
79 ft
3 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Parks Creek over Little Trinity River is a concrete box beam or girders - multiple carrying Parks Creek over Little Trinity River in Trinity County, California. It was built in 1974, so it is 51 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 79 ft (24 m) long and 31 ft wide.

CarriesParks Creek
CrossesLittle Trinity River
LocationNo Data Entered
RouteFederal Lands Road 42N17
Coordinates41.25, -122.63
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24 m)
Longest span50 ft (15.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Parks Creek over Little Trinity River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Parks Creek over Little Trinity River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Parks Creek over Little Trinity River carry?

About 50 vehicles per day (latest count).

How long is Parks Creek over Little Trinity River?

The structure is 79 ft (24 m) long with a longest span of 50 ft (15.3 m) and a deck 31 ft wide.

Who owns Parks Creek over Little Trinity River?

It is owned by the U.S. Forest Service.