US Bridges

State Route 70 over W Br Feather Riv(lk Oro)

Fair

Butte County, California · 03-BUT-070-28.22 · Structure no. 12 0134

Built
1962
63 years old
Condition
Fair
inspected April 2023
Type
Truss - Deck
Steel
Length
2,731 ft
4 main spans
Daily traffic
2,550
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 70 over W Br Feather Riv(lk Oro) is a steel truss - deck carrying State Route 70 over W Br Feather Riv(lk Oro) in Butte County, California. It was built in 1962, so it is 63 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 2,550 vehicles a day, projected to reach 3,955 by 2041. The structure is 2,731 ft (832.4 m) long and 61 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesState Route 70
CrossesW Br Feather Riv(lk Oro)
Location03-BUT-070-28.22
RouteState Highway 70
CountyButte County
StateCalifornia
Coordinates39.66236, -121.53484
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans4 (+10 approach)
Design loadHS 20
Structure length2,731 ft (832.4 m)
Longest span576 ft (175.6 m)
Deck width61 ft (18.6 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2020)
Projected traffic3,955 by 2041
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 70 over W Br Feather Riv(lk Oro) built?

It was built in 1962, making it 63 years old in 2025.

What condition is State Route 70 over W Br Feather Riv(lk Oro) 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 April 2023.

How much traffic does State Route 70 over W Br Feather Riv(lk Oro) carry?

About 2,550 vehicles per day (2020 count).

How long is State Route 70 over W Br Feather Riv(lk Oro)?

The structure is 2,731 ft (832.4 m) long with a longest span of 576 ft (175.6 m) and a deck 61 ft wide.

Who owns State Route 70 over W Br Feather Riv(lk Oro)?

It is owned by the State Highway Agency.