US Bridges

Road 23N18 over Coldwater Creek

Fair

Plumas County, California · At Arkansas Ravine · Structure no. 051154000001053

Built
1960
65 years old, rebuilt 2000
Condition
Fair
inspected September 2023
Type
Frame
Concrete
Length
60 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Road 23N18 over Coldwater Creek is a concrete frame carrying Road 23N18 over Coldwater Creek in Plumas County, California. It was built in 1960 and reconstructed in 2000, so it is 65 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 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 60 ft (18.3 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRoad 23N18
CrossesColdwater Creek
LocationAt Arkansas Ravine
RouteFederal Lands Road 23N18
CountyPlumas County
StateCalifornia
Coordinates39.79259, -121.2142
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length60 ft (18.3 m)
Longest span40 ft (12.2 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
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 Road 23N18 over Coldwater Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2000.

What condition is Road 23N18 over Coldwater 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 September 2023.

How much traffic does Road 23N18 over Coldwater Creek carry?

About 50 vehicles per day (latest count).

How long is Road 23N18 over Coldwater Creek?

The structure is 60 ft (18.3 m) long with a longest span of 40 ft (12.2 m) and a deck 16 ft wide.

Who owns Road 23N18 over Coldwater Creek?

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