US Bridges

Dersch RD over Bear Creek

Fair

Shasta County, California · 5.4 MI E Deschutes RD · Structure no. 06C0075

Built
1963
62 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
243 ft
6 main spans
Daily traffic
1,320
2013 count
Owner
County
County Highway Agency

About this bridge

Dersch RD over Bear Creek is a concrete continuous tee beam carrying Dersch RD over Bear Creek in Shasta County, California. It was built in 1963, so it is 62 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 1,320 vehicles a day, roughly 5% of them trucks, projected to reach 4,081 by 2045. The structure is 243 ft (74.1 m) long and 29 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesDersch RD
CrossesBear Creek
Location5.4 MI E Deschutes RD
RouteCounty Highway 0
Coordinates40.48573, -122.15323
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment6: Equal to present minimum criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span41 ft (12.4 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,320 (2013)
Projected traffic4,081 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 Dersch RD over Bear Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Dersch RD over Bear 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 September 2024.

How much traffic does Dersch RD over Bear Creek carry?

About 1,320 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Dersch RD over Bear Creek?

The structure is 243 ft (74.1 m) long with a longest span of 41 ft (12.4 m) and a deck 29 ft wide.

Who owns Dersch RD over Bear Creek?

It is owned by the County Highway Agency.