US Bridges

Fish and Game Road over Susan River

Fair

Lassen County, California · 1.6 Mi. East of Mapes LN · Structure no. 07C0003

Built
1938
87 years old, rebuilt 1996
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
100
1998 count
Owner
County
County Highway Agency

About this bridge

Fish and Game Road over Susan River is a concrete continuous slab carrying Fish and Game Road over Susan River in Lassen County, California. It was built in 1938 and reconstructed in 1996, so it is 87 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2041. The structure is 52 ft (15.9 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFish and Game Road
CrossesSusan River
Location1.6 Mi. East of Mapes LN
RouteCounty Highway 0
Coordinates40.35823, -120.29795
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length52 ft (15.9 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1998)
Projected traffic120 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Fish and Game Road over Susan River built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1996.

What condition is Fish and Game Road over Susan 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 2024.

How much traffic does Fish and Game Road over Susan River carry?

About 100 vehicles per day (1998 count), of which roughly 5% are trucks.

How long is Fish and Game Road over Susan River?

The structure is 52 ft (15.9 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns Fish and Game Road over Susan River?

It is owned by the County Highway Agency.