US Bridges

Jordan Hill RD over Concow Creek

Fair

Butte County, California · 0.8 MI W of Concow RD · Structure no. 12C0364

Built
1920
105 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
101 ft
3 main spans
Daily traffic
5
2018 count
Owner
County
County Highway Agency

About this bridge

Jordan Hill RD over Concow Creek is a steel stringer/multi-beam or girder carrying Jordan Hill RD over Concow Creek in Butte County, California. It was built in 1920, so it is 105 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 5 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 5 vehicles a day, projected to reach 16 by 2041. The structure is 101 ft (30.8 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesJordan Hill RD
CrossesConcow Creek
Location0.8 MI W of Concow RD
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.74593, -121.53872
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length101 ft (30.8 m)
Longest span33 ft (10.1 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2018)
Projected traffic16 by 2041
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Jordan Hill RD over Concow Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Jordan Hill RD over Concow 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 November 2023.

How much traffic does Jordan Hill RD over Concow Creek carry?

About 5 vehicles per day (2018 count).

How long is Jordan Hill RD over Concow Creek?

The structure is 101 ft (30.8 m) long with a longest span of 33 ft (10.1 m) and a deck 16 ft wide.

Who owns Jordan Hill RD over Concow Creek?

It is owned by the County Highway Agency.