US Bridges

Mangrove Ave over Big Chico Creek

Fair

Butte County, California · Btw 3rd & Vallombrosa Ave · Structure no. 12C0278

Built
1958
67 years old, rebuilt 1983
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
54 ft
1 main span
Daily traffic
18,700
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mangrove Ave over Big Chico Creek is a concrete tee beam carrying Mangrove Ave over Big Chico Creek in Butte County, California. It was built in 1958 and reconstructed in 1983, so it is 67 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 18,700 vehicles a day, roughly 4% of them trucks, projected to reach 36,914 by 2042. The structure is 54 ft (16.5 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMangrove Ave
CrossesBig Chico Creek
LocationBtw 3rd & Vallombrosa Ave
RouteCity Street 0
CountyButte County
StateCalifornia
Coordinates39.73328, -121.83509
Functional classUrban Other Principal Arterial

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 inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating42.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span52 ft (15.9 m)
Deck width94 ft (28.5 m)
Roadway width78 ft (23.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,700 (2018)
Projected traffic36,914 by 2042
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Mangrove Ave over Big Chico Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1983.

What condition is Mangrove Ave over Big Chico 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 October 2024.

How much traffic does Mangrove Ave over Big Chico Creek carry?

About 18,700 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Mangrove Ave over Big Chico Creek?

The structure is 54 ft (16.5 m) long with a longest span of 52 ft (15.9 m) and a deck 94 ft wide.

Who owns Mangrove Ave over Big Chico Creek?

It is owned by the City or Municipal Highway Agency.