US Bridges

Ohm RD over Salt Creek

Fair

Colusa County, California · 0.5 MI South of Hahn Rd. · Structure no. 15C0200

Built
2006
19 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
105
2014 count
Owner
County
County Highway Agency

About this bridge

Ohm RD over Salt Creek is a concrete continuous slab carrying Ohm RD over Salt Creek in Colusa County, California. It was built in 2006, so it is 19 years old, younger 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 105 vehicles a day, roughly 10% of them trucks, projected to reach 213 by 2042. The structure is 93 ft (28.2 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesOhm RD
CrossesSalt Creek
Location0.5 MI South of Hahn Rd.
RouteCounty Highway 0
Coordinates39.04901, -122.04163
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 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 spans3
Design loadHS 20 + Mod
Structure length93 ft (28.2 m)
Longest span36 ft (11 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2014)
Projected traffic213 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Ohm RD over Salt Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Ohm RD over Salt 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 October 2023.

How much traffic does Ohm RD over Salt Creek carry?

About 105 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Ohm RD over Salt Creek?

The structure is 93 ft (28.2 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns Ohm RD over Salt Creek?

It is owned by the County Highway Agency.