US Bridges

Sawyers Bar RD over Jackass Gulch

Fair

Siskiyou County, California · 1.7 MI W Eddys Gulch RD · Structure no. 02C0143

Built
1968
57 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
323
2011 count
Owner
County
County Highway Agency

About this bridge

Sawyers Bar RD over Jackass Gulch is a concrete tee beam carrying Sawyers Bar RD over Jackass Gulch in Siskiyou County, California. It was built in 1968, so it is 57 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 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 323 vehicles a day, roughly 2% of them trucks, projected to reach 163 by 2041. The structure is 34 ft (10.4 m) long and 27 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesSawyers Bar RD
CrossesJackass Gulch
Location1.7 MI W Eddys Gulch RD
RouteCounty Highway 0
CountySiskiyou County
StateCalifornia
Coordinates41.30268, -123.15845
Functional classRural Major 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic323 (2011)
Projected traffic163 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Sawyers Bar RD over Jackass Gulch built?

It was built in 1968, making it 57 years old in 2025.

What condition is Sawyers Bar RD over Jackass Gulch 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 Sawyers Bar RD over Jackass Gulch carry?

About 323 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Sawyers Bar RD over Jackass Gulch?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.

Who owns Sawyers Bar RD over Jackass Gulch?

It is owned by the County Highway Agency.