US Bridges

Road 61 over Provident Canal

Fair

Glenn County, California · 6.04 MI East of RD 99W · Structure no. 11C0025

Built
1948
77 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
62 ft
2 main spans
Daily traffic
928
2018 count
Owner
County
County Highway Agency

About this bridge

Road 61 over Provident Canal is a concrete continuous slab carrying Road 61 over Provident Canal in Glenn County, California. It was built in 1948, so it is 77 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 928 vehicles a day, roughly 30% of them trucks, projected to reach 1,157 by 2042. The structure is 62 ft (18.9 m) long and 31 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesRoad 61
CrossesProvident Canal
Location6.04 MI East of RD 99W
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.45798, -122.08584
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating22.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length62 ft (18.9 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic928 (2018)
Projected traffic1,157 by 2042
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Road 61 over Provident Canal built?

It was built in 1948, making it 77 years old in 2025.

What condition is Road 61 over Provident Canal 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 February 2024.

How much traffic does Road 61 over Provident Canal carry?

About 928 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is Road 61 over Provident Canal?

The structure is 62 ft (18.9 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Road 61 over Provident Canal?

It is owned by the County Highway Agency.