US Bridges

Road 68 over Mill Creek

Fair

Tulare County, California · 0.6 MI N of Ave 280 · Structure no. 46C0153

Built
1953
72 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
510
1971 count
Owner
County
County Highway Agency

About this bridge

Road 68 over Mill Creek is a concrete continuous culvert carrying Road 68 over Mill Creek in Tulare County, California. It was built in 1953, so it is 72 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 510 vehicles a day, roughly 5% of them trucks, projected to reach 657 by 2042. The structure is 22 ft (6.7 m) long and 38 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesRoad 68
CrossesMill Creek
Location0.6 MI N of Ave 280
RouteCounty Highway 0
Coordinates36.30717, -119.42132
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (1971)
Projected traffic657 by 2042
Trucks5%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Road 68 over Mill Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is Road 68 over Mill Creek 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 March 2024.

How much traffic does Road 68 over Mill Creek carry?

About 510 vehicles per day (1971 count), of which roughly 5% are trucks.

How long is Road 68 over Mill Creek?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m) and a deck 38 ft wide.

Who owns Road 68 over Mill Creek?

It is owned by the County Highway Agency.