US Bridges

Salmon River Road over Nordheimer Creek

Fair

Siskiyou County, California · 4 MI N/O Sawyers Bar RD · Structure no. 02C0159

Built
1967
58 years old
Condition
Fair
inspected August 2021
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
225 ft
3 main spans
Daily traffic
93
2011 count
Owner
County
County Highway Agency

About this bridge

Salmon River Road over Nordheimer Creek is a concrete continuous box beam or girders - multiple carrying Salmon River Road over Nordheimer Creek in Siskiyou County, California. It was built in 1967, so it is 58 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 93 vehicles a day, roughly 2% of them trucks, projected to reach 110 by 2043. The structure is 225 ft (68.6 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSalmon River Road
CrossesNordheimer Creek
Location4 MI N/O Sawyers Bar RD
RouteCounty Highway 0
Coordinates41.29652, -123.36257
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2021
Inspection intervalevery 48 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span90 ft (27.4 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93 (2011)
Projected traffic110 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Salmon River Road over Nordheimer Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Salmon River Road over Nordheimer 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 August 2021.

How much traffic does Salmon River Road over Nordheimer Creek carry?

About 93 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Salmon River Road over Nordheimer Creek?

The structure is 225 ft (68.6 m) long with a longest span of 90 ft (27.4 m) and a deck 27 ft wide.

Who owns Salmon River Road over Nordheimer Creek?

It is owned by the County Highway Agency.