US Bridges

3rd ST (corning) over Themper Ditch

Fair

Tehama County, California · 0.5 MI N Solano RD · Structure no. 08C0108

Built
1915
110 years old, rebuilt 1925
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
41 ft
6 main spans
Daily traffic
4,152
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

3rd ST (corning) over Themper Ditch is a concrete continuous culvert carrying 3rd ST (corning) over Themper Ditch in Tehama County, California. It was built in 1915 and reconstructed in 1925, so it is 110 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 4,152 vehicles a day, roughly 8% of them trucks, projected to reach 5,221 by 2042. The structure is 41 ft (12.5 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
Carries3rd ST (corning)
CrossesThemper Ditch
Location0.5 MI N Solano RD
RouteCounty Highway 0
CountyTehama County
StateCalifornia
Coordinates39.93515, -122.1791
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span6 ft (1.8 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,152 (2010)
Projected traffic5,221 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 3rd ST (corning) over Themper Ditch built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1925.

What condition is 3rd ST (corning) over Themper Ditch 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 November 2024.

How much traffic does 3rd ST (corning) over Themper Ditch carry?

About 4,152 vehicles per day (2010 count), of which roughly 8% are trucks.

How long is 3rd ST (corning) over Themper Ditch?

The structure is 41 ft (12.5 m) long with a longest span of 6 ft (1.8 m) and a deck 33 ft wide.

Who owns 3rd ST (corning) over Themper Ditch?

It is owned by the City or Municipal Highway Agency.