US Bridges

Road 22 over Central Irrigation Canal

Fair

Glenn County, California · West of S.H. 45 · Structure no. 11C0037

Built
1936
89 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
3 main spans
Daily traffic
63
2018 count
Owner
County
County Highway Agency

About this bridge

Road 22 over Central Irrigation Canal is a steel stringer/multi-beam or girder carrying Road 22 over Central Irrigation Canal in Glenn County, California. It was built in 1936, so it is 89 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 63 vehicles a day, projected to reach 91 by 2046. The structure is 80 ft (24.4 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRoad 22
CrossesCentral Irrigation Canal
LocationWest of S.H. 45
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.71723, -122.00779
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating18.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span40 ft (12.2 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2018)
Projected traffic91 by 2046
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 22 over Central Irrigation Canal built?

It was built in 1936, making it 89 years old in 2025.

What condition is Road 22 over Central Irrigation 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 22 over Central Irrigation Canal carry?

About 63 vehicles per day (2018 count).

How long is Road 22 over Central Irrigation Canal?

The structure is 80 ft (24.4 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.

Who owns Road 22 over Central Irrigation Canal?

It is owned by the County Highway Agency.