US Bridges

Road F over Glenn-Colusa Canal

Fair

Glenn County, California · 0.5 MI S/O Road 62 · Structure no. 11C0003

Built
1948
77 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
154 ft
5 main spans
Daily traffic
30
2011 count
Owner
County
County Highway Agency

About this bridge

Road F over Glenn-Colusa Canal is a concrete continuous slab carrying Road F over Glenn-Colusa 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 6 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 30 vehicles a day, projected to reach 32 by 2043. The structure is 154 ft (46.9 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRoad F
CrossesGlenn-Colusa Canal
Location0.5 MI S/O Road 62
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.44199, -122.23032
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2011)
Projected traffic32 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 F over Glenn-Colusa Canal built?

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

What condition is Road F over Glenn-Colusa 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 January 2025.

How much traffic does Road F over Glenn-Colusa Canal carry?

About 30 vehicles per day (2011 count).

How long is Road F over Glenn-Colusa Canal?

The structure is 154 ft (46.9 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns Road F over Glenn-Colusa Canal?

It is owned by the County Highway Agency.