US Bridges

M231 over North Fork Tule River

Good

Tulare County, California · 0.19 MI NE of SM239 · Structure no. 46C0083

Built
1967
58 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
63 ft
2 main spans
Daily traffic
25
1978 count
Owner
County
County Highway Agency

About this bridge

M231 over North Fork Tule River is a concrete continuous slab carrying M231 over North Fork Tule River in Tulare County, California. It was built in 1967, so it is 58 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 25 vehicles a day, projected to reach 55 by 2042. The structure is 63 ft (19.2 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesM231
CrossesNorth Fork Tule River
Location0.19 MI NE of SM239
RouteCounty Highway 0
Coordinates36.20949, -118.80618
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating56.4 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span31 ft (9.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1978)
Projected traffic55 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 M231 over North Fork Tule River built?

It was built in 1967, making it 58 years old in 2025.

What condition is M231 over North Fork Tule River 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 July 2024.

How much traffic does M231 over North Fork Tule River carry?

About 25 vehicles per day (1978 count).

How long is M231 over North Fork Tule River?

The structure is 63 ft (19.2 m) long with a longest span of 31 ft (9.6 m) and a deck 25 ft wide.

Who owns M231 over North Fork Tule River?

It is owned by the County Highway Agency.