US Bridges

Tomki RD over Tomki Creek

Fair

Mendocino County, California · 0.2 MI N JCT CR 308 · Structure no. 10C0132

Built
1988
37 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
174 ft
2 main spans
Daily traffic
130
2011 count
Owner
County
County Highway Agency

About this bridge

Tomki RD over Tomki Creek is a prestressed concrete continuous box beam or girders - multiple carrying Tomki RD over Tomki Creek in Mendocino County, California. It was built in 1988, so it is 37 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 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 130 vehicles a day, roughly 5% of them trucks, projected to reach 131 by 2041. The structure is 174 ft (53 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesTomki RD
CrossesTomki Creek
Location0.2 MI N JCT CR 308
RouteCounty Highway 0
Coordinates39.43675, -123.24202
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length174 ft (53 m)
Longest span86 ft (26.2 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2011)
Projected traffic131 by 2041
Trucks5%
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 Tomki RD over Tomki Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Tomki RD over Tomki 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 September 2023.

How much traffic does Tomki RD over Tomki Creek carry?

About 130 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Tomki RD over Tomki Creek?

The structure is 174 ft (53 m) long with a longest span of 86 ft (26.2 m) and a deck 29 ft wide.

Who owns Tomki RD over Tomki Creek?

It is owned by the County Highway Agency.