US Bridges

Dwr Access Road over Oregon Gulch

Good

Butte County, California · 3.2 MI from Lumpkin RD · Structure no. 12P0005

Built
2020
5 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
20
2021 count
Owner
State
Other State Agency

About this bridge

Dwr Access Road over Oregon Gulch is a steel stringer/multi-beam or girder carrying Dwr Access Road over Oregon Gulch in Butte County, California. It was built in 2020, so it is 5 years old, younger 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 20 vehicles a day, roughly 20% of them trucks, projected to reach 36 by 2041. The structure is 50 ft (15.2 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesDwr Access Road
CrossesOregon Gulch
Location3.2 MI from Lumpkin RD
RouteState Lands Road 0
Coordinates39.54498, -121.38674
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 protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span48 ft (14.5 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)
Projected traffic36 by 2041
Trucks20%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State 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 Dwr Access Road over Oregon Gulch built?

It was built in 2020, making it 5 years old in 2025.

What condition is Dwr Access Road over Oregon Gulch 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 August 2023.

How much traffic does Dwr Access Road over Oregon Gulch carry?

About 20 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is Dwr Access Road over Oregon Gulch?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.5 m) and a deck 16 ft wide.

Who owns Dwr Access Road over Oregon Gulch?

It is owned by the Other State Agency.