US Bridges

Road #48 over Branch Walker Creek

Poor

Glenn County, California · 0.85 MI East of 99W · Structure no. 11C0261

Built
1940
85 years old, rebuilt 1955
Condition
Poor
inspected February 2025
Type
Girder and Floorbeam System
Concrete
Length
28 ft
1 main span
Daily traffic
647
2011 count
Owner
County
County Highway Agency

About this bridge

Road #48 over Branch Walker Creek is a concrete girder and floorbeam system carrying Road #48 over Branch Walker Creek in Glenn County, California. It was built in 1940 and reconstructed in 1955, so it is 85 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 647 vehicles a day, roughly 10% of them trucks, projected to reach 767 by 2047. The structure is 28 ft (8.5 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesRoad #48
CrossesBranch Walker Creek
Location0.85 MI East of 99W
RouteCounty Highway 0
Coordinates39.53882, -122.1781
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating18.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic647 (2011)
Projected traffic767 by 2047
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$301,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Road #48 over Branch Walker Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1955.

What condition is Road #48 over Branch Walker Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Road #48 over Branch Walker Creek carry?

About 647 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Road #48 over Branch Walker Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.

Who owns Road #48 over Branch Walker Creek?

It is owned by the County Highway Agency.