US Bridges

Cohasset RD over Mud Creek

Good

Butte County, California · 0.1 MI S Rchardsn Sprg RD · Structure no. 12C0124

Built
1962
63 years old
Condition
Good
inspected July 2022
Type
Tee Beam
Concrete
Length
70 ft
1 main span
Daily traffic
2,148
2019 count
Owner
County
County Highway Agency

About this bridge

Cohasset RD over Mud Creek is a concrete tee beam carrying Cohasset RD over Mud Creek in Butte County, California. It was built in 1962, so it is 63 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,148 vehicles a day, roughly 10% of them trucks, projected to reach 2,144 by 2042. The structure is 70 ft (21.4 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCohasset RD
CrossesMud Creek
Location0.1 MI S Rchardsn Sprg RD
RouteCounty Highway 0
Coordinates39.81616, -121.8478
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length70 ft (21.4 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,148 (2019)
Projected traffic2,144 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cohasset RD over Mud Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Cohasset RD over Mud Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2022.

How much traffic does Cohasset RD over Mud Creek carry?

About 2,148 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Cohasset RD over Mud Creek?

The structure is 70 ft (21.4 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns Cohasset RD over Mud Creek?

It is owned by the County Highway Agency.