US Bridges

Alta Vista DR over ST RTE 178

Fair

Kern County, California · 06-KER-178-R2.74-BKD · Structure no. 50 0330

Built
1967
58 years old
Condition
Fair
inspected November 2022
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
163 ft
2 main spans
Daily traffic
4,791
2013 count
Owner
State
State Highway Agency

About this bridge

Alta Vista DR over ST RTE 178 is a concrete continuous box beam or girders - multiple carrying Alta Vista DR over ST RTE 178 in Kern 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 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 4,791 vehicles a day, roughly 3% of them trucks, projected to reach 6,477 by 2044. The structure is 163 ft (49.7 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAlta Vista DR
CrossesST RTE 178
Location06-KER-178-R2.74-BKD
RouteCity Street 0F299
CountyKern County
StateCalifornia
Coordinates35.38376, -118.99724
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length163 ft (49.7 m)
Longest span83 ft (25.3 m)
Deck width76 ft (23.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,791 (2013)
Projected traffic6,477 by 2044
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 Alta Vista DR over ST RTE 178 built?

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

What condition is Alta Vista DR over ST RTE 178 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 November 2022.

How much traffic does Alta Vista DR over ST RTE 178 carry?

About 4,791 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is Alta Vista DR over ST RTE 178?

The structure is 163 ft (49.7 m) long with a longest span of 83 ft (25.3 m) and a deck 76 ft wide.

Who owns Alta Vista DR over ST RTE 178?

It is owned by the State Highway Agency.