US Bridges

Cecilville Road over South Fork Salmon River

Good

Siskiyou County, California · 4 MI S/O Salmon River RD · Structure no. 02C0089

Built
1987
38 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
240 ft
3 main spans
Daily traffic
120
2024 count
Owner
County
County Highway Agency

About this bridge

Cecilville Road over South Fork Salmon River is a concrete continuous box beam or girders - multiple carrying Cecilville Road over South Fork Salmon River in Siskiyou County, California. It was built in 1987, so it is 38 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 120 vehicles a day, roughly 2% of them trucks, projected to reach 150 by 2044. The structure is 240 ft (73.2 m) long and 25 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesCecilville Road
CrossesSouth Fork Salmon River
Location4 MI S/O Salmon River RD
RouteCounty Highway 0
Coordinates41.23317, -123.26063
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span95 ft (29 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2024)
Projected traffic150 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 Cecilville Road over South Fork Salmon River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Cecilville Road over South Fork Salmon 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 August 2023.

How much traffic does Cecilville Road over South Fork Salmon River carry?

About 120 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Cecilville Road over South Fork Salmon River?

The structure is 240 ft (73.2 m) long with a longest span of 95 ft (29 m) and a deck 25 ft wide.

Who owns Cecilville Road over South Fork Salmon River?

It is owned by the County Highway Agency.