US Bridges

Illinois Ave over Jewett Creek

Fair

Tehama County, California · 1.1 MI S of South Ave · Structure no. 08C0035

Built
1989
36 years old
Condition
Fair
inspected April 2021
Type
Slab
Concrete Continuous
Length
99 ft
3 main spans
Daily traffic
150
2010 count
Owner
County
County Highway Agency

About this bridge

Illinois Ave over Jewett Creek is a concrete continuous slab carrying Illinois Ave over Jewett Creek in Tehama County, California. It was built in 1989, so it is 36 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 150 vehicles a day, roughly 6% of them trucks, projected to reach 214 by 2043. The structure is 99 ft (30.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIllinois Ave
CrossesJewett Creek
Location1.1 MI S of South Ave
RouteCounty Highway 0
CountyTehama County
StateCalifornia
Coordinates39.89036, -122.09344
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum 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 length99 ft (30.2 m)
Longest span32 ft (9.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2010)
Projected traffic214 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Illinois Ave over Jewett Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Illinois Ave over Jewett 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 April 2021.

How much traffic does Illinois Ave over Jewett Creek carry?

About 150 vehicles per day (2010 count), of which roughly 6% are trucks.

How long is Illinois Ave over Jewett Creek?

The structure is 99 ft (30.2 m) long with a longest span of 32 ft (9.8 m) and a deck 29 ft wide.

Who owns Illinois Ave over Jewett Creek?

It is owned by the County Highway Agency.