US Bridges

County RD 311 over Deep Cut (baxter) Creek

Good

Lassen County, California · 1.75 MI E of CR a 3 · Structure no. 07C0073

Built
1988
37 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
53 ft
2 main spans
Daily traffic
150
1987 count
Owner
County
County Highway Agency

About this bridge

County RD 311 over Deep Cut (baxter) Creek is a concrete continuous slab carrying County RD 311 over Deep Cut (baxter) Creek in Lassen County, California. It was built in 1988, so it is 37 years old, younger 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 150 vehicles a day, roughly 8% of them trucks, projected to reach 196 by 2041. The structure is 53 ft (16.2 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCounty RD 311
CrossesDeep Cut (baxter) Creek
Location1.75 MI E of CR a 3
RouteCounty Highway 0
Coordinates40.29251, -120.45538
Functional classRural Local

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 inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length53 ft (16.2 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1987)
Projected traffic196 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 County RD 311 over Deep Cut (baxter) Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is County RD 311 over Deep Cut (baxter) 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 August 2023.

How much traffic does County RD 311 over Deep Cut (baxter) Creek carry?

About 150 vehicles per day (1987 count), of which roughly 8% are trucks.

How long is County RD 311 over Deep Cut (baxter) Creek?

The structure is 53 ft (16.2 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns County RD 311 over Deep Cut (baxter) Creek?

It is owned by the County Highway Agency.