US Bridges

Lenahan Road over Funks Creek

Fair

Colusa County, California · 0.2 MI E of Sutton Road · Structure no. 15C0048

Built
1971
54 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
40
2014 count
Owner
County
County Highway Agency

About this bridge

Lenahan Road over Funks Creek is a concrete tee beam carrying Lenahan Road over Funks Creek in Colusa County, California. It was built in 1971, so it is 54 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 40 vehicles a day, roughly 1% of them trucks, projected to reach 100 by 2041. The structure is 40 ft (12.2 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLenahan Road
CrossesFunks Creek
Location0.2 MI E of Sutton Road
RouteCounty Highway 0
CountyColusa County
StateCalifornia
Coordinates39.3343, -122.20722
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2014)
Projected traffic100 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Lenahan Road over Funks Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Lenahan Road over Funks 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 July 2023.

How much traffic does Lenahan Road over Funks Creek carry?

About 40 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Lenahan Road over Funks Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 29 ft wide.

Who owns Lenahan Road over Funks Creek?

It is owned by the County Highway Agency.