US Bridges

Delevan Road over Interstate 5

Fair

Colusa County, California · 03-COL-005-R31.84 · Structure no. 15 0058

Built
1970
55 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
172 ft
2 main spans
Daily traffic
200
2012 count
Owner
State
State Highway Agency

About this bridge

Delevan Road over Interstate 5 is a concrete continuous box beam or girders - multiple carrying Delevan Road over Interstate 5 in Colusa County, California. It was built in 1970, so it is 55 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 200 vehicles a day, roughly 20% of them trucks, projected to reach 306 by 2042. The structure is 172 ft (52.4 m) long and 39 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesDelevan Road
CrossesInterstate 5
Location03-COL-005-R31.84
RouteCounty Highway 0
Coordinates39.34883, -122.19527
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length172 ft (52.4 m)
Longest span85 ft (25.9 m)
Deck width39 ft (11.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2012)
Projected traffic306 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Delevan Road over Interstate 5 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Delevan Road over Interstate 5 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 April 2024.

How much traffic does Delevan Road over Interstate 5 carry?

About 200 vehicles per day (2012 count), of which roughly 20% are trucks.

How long is Delevan Road over Interstate 5?

The structure is 172 ft (52.4 m) long with a longest span of 85 ft (25.9 m) and a deck 39 ft wide.

Who owns Delevan Road over Interstate 5?

It is owned by the State Highway Agency.