US Bridges

State Route 155 over Tillie Creek Overflow

Fair

Kern County, California · 06-KER-155-R60.88 · Structure no. 50 0434

Built
1951
74 years old, rebuilt 1962
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
6,300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 155 over Tillie Creek Overflow is a concrete continuous culvert carrying State Route 155 over Tillie Creek Overflow in Kern County, California. It was built in 1951 and reconstructed in 1962, so it is 74 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 6,300 vehicles a day, roughly 10% of them trucks, projected to reach 14,951 by 2044. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 155
CrossesTillie Creek Overflow
Location06-KER-155-R60.88
RouteState Highway 155
Coordinates35.70341, -118.45856
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2009)
Projected traffic14,951 by 2044
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 155 over Tillie Creek Overflow built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1962.

What condition is State Route 155 over Tillie Creek Overflow 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 December 2024.

How much traffic does State Route 155 over Tillie Creek Overflow carry?

About 6,300 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is State Route 155 over Tillie Creek Overflow?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3.1 m).

Who owns State Route 155 over Tillie Creek Overflow?

It is owned by the State Highway Agency.