US Bridges

Road 16 over Central Irrigation Canal

Fair

Glenn County, California · 0.02 MI W HWY 45 · Structure no. 11C0152

Built
1930
95 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
96 ft
3 main spans
Daily traffic
249
2011 count
Owner
County
County Highway Agency

About this bridge

Road 16 over Central Irrigation Canal is a concrete continuous tee beam carrying Road 16 over Central Irrigation Canal in Glenn County, California. It was built in 1930, so it is 95 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 249 vehicles a day, roughly 15% of them trucks, projected to reach 320 by 2042. The structure is 96 ft (29.3 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRoad 16
CrossesCentral Irrigation Canal
Location0.02 MI W HWY 45
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.73743, -122.01669
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating27.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length96 ft (29.3 m)
Longest span50 ft (15.2 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic249 (2011)
Projected traffic320 by 2042
Trucks15%
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 16 over Central Irrigation Canal built?

It was built in 1930, making it 95 years old in 2025.

What condition is Road 16 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 16 over Central Irrigation Canal carry?

About 249 vehicles per day (2011 count), of which roughly 15% are trucks.

How long is Road 16 over Central Irrigation Canal?

The structure is 96 ft (29.3 m) long with a longest span of 50 ft (15.2 m) and a deck 22 ft wide.

Who owns Road 16 over Central Irrigation Canal?

It is owned by the County Highway Agency.