US Bridges

Buttonwillow DR over Interstate 5

Good

Kern County, California · 06-KER-005-58.01 · Structure no. 50 0309

Built
1969
56 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
311 ft
2 main spans
Daily traffic
35
2018 count
Owner
State
State Highway Agency

About this bridge

Buttonwillow DR over Interstate 5 is a prestressed concrete continuous box beam or girders - multiple carrying Buttonwillow DR over Interstate 5 in Kern County, California. It was built in 1969, so it is 56 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 35 vehicles a day, roughly 20% of them trucks, projected to reach 70 by 2042. The structure is 311 ft (94.8 m) long and 34 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesButtonwillow DR
CrossesInterstate 5
Location06-KER-005-58.01
RouteCounty Highway 0
Coordinates35.455, -119.47483
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating45.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length311 ft (94.8 m)
Longest span152 ft (46.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2018)
Projected traffic70 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.3 mi (31 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Buttonwillow DR over Interstate 5 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Buttonwillow DR over Interstate 5 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 October 2024.

How much traffic does Buttonwillow DR over Interstate 5 carry?

About 35 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is Buttonwillow DR over Interstate 5?

The structure is 311 ft (94.8 m) long with a longest span of 152 ft (46.3 m) and a deck 34 ft wide.

Who owns Buttonwillow DR over Interstate 5?

It is owned by the State Highway Agency.