US Bridges

Rock Creek Drive over Rock Creek

Fair

Butte County, California · 0.01 MI NW of Rock CR RD · Structure no. 12C0321

Built
1926
99 years old, rebuilt 1949
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
4 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Rock Creek Drive over Rock Creek is a steel stringer/multi-beam or girder carrying Rock Creek Drive over Rock Creek in Butte County, California. It was built in 1926 and reconstructed in 1949, so it is 99 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 20 vehicles a day, projected to reach 65 by 2041. The structure is 120 ft (36.6 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRock Creek Drive
CrossesRock Creek
Location0.01 MI NW of Rock CR RD
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.84388, -121.83609
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span30 ft (9.2 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic65 by 2041
Trucks—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Creek Drive over Rock Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1949.

What condition is Rock Creek Drive over Rock 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 July 2024.

How much traffic does Rock Creek Drive over Rock Creek carry?

About 20 vehicles per day (2020 count).

How long is Rock Creek Drive over Rock Creek?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.2 m) and a deck 20 ft wide.

Who owns Rock Creek Drive over Rock Creek?

It is owned by the County Highway Agency.