US Bridges

CR 111 over J Canal

Good

Modoc County, California · 2.6 MI S of SH 139 · Structure no. 03C0064

Built
1954
71 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
169
2015 count
Owner
County
County Highway Agency

About this bridge

CR 111 over J Canal is a concrete slab carrying CR 111 over J Canal in Modoc County, California. It was built in 1954, so it is 71 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 169 vehicles a day, roughly 10% of them trucks, projected to reach 220 by 2045. The structure is 23 ft (7 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCR 111
CrossesJ Canal
Location2.6 MI S of SH 139
RouteCounty Highway 0
Coordinates41.87111, -121.41724
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span20 ft (6.2 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic169 (2015)
Projected traffic220 by 2045
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 111 over J Canal built?

It was built in 1954, making it 71 years old in 2025.

What condition is CR 111 over J Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does CR 111 over J Canal carry?

About 169 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is CR 111 over J Canal?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.2 m) and a deck 31 ft wide.

Who owns CR 111 over J Canal?

It is owned by the County Highway Agency.