US Bridges

Nelson Creek RD over Nelson Creek

Good

Shasta County, California · 0.7 MI E Big Bend RD · Structure no. 06C0111

Built
1970
55 years old, rebuilt 1976
Condition
Good
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
102 ft
2 main spans
Daily traffic
100
2014 count
Owner
County
County Highway Agency

About this bridge

Nelson Creek RD over Nelson Creek is a concrete continuous tee beam carrying Nelson Creek RD over Nelson Creek in Shasta County, California. It was built in 1970 and reconstructed in 1976, so it is 55 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2041. The structure is 102 ft (31.1 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNelson Creek RD
CrossesNelson Creek
Location0.7 MI E Big Bend RD
RouteCounty Highway 0
Coordinates41.02674, -121.90199
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span37 ft (11.3 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2014)
Projected traffic160 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Nelson Creek RD over Nelson Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1976.

What condition is Nelson Creek RD over Nelson 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 April 2023.

How much traffic does Nelson Creek RD over Nelson Creek carry?

About 100 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Nelson Creek RD over Nelson Creek?

The structure is 102 ft (31.1 m) long with a longest span of 37 ft (11.3 m) and a deck 18 ft wide.

Who owns Nelson Creek RD over Nelson Creek?

It is owned by the County Highway Agency.