US Bridges

7th Standard RD EB over Calloway Canal

Fair

Kern County, California · West of Calloway Road · Structure no. 50C0344R

Built
2010
15 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
9,723
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

7th Standard RD EB over Calloway Canal is a prestressed concrete stringer/multi-beam or girder carrying 7th Standard RD EB over Calloway Canal in Kern County, California. It was built in 2010, so it is 15 years old, younger 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 9,723 vehicles a day, roughly 3% of them trucks, projected to reach 15,296 by 2047. The structure is 88 ft (26.8 m) long and 49 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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Carries7th Standard RD EB
CrossesCalloway Canal
LocationWest of Calloway Road
RouteCity Street 0
CountyKern County
StateCalifornia
Coordinates35.4414, -119.13019
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length88 ft (26.8 m)
Longest span88 ft (26.8 m)
Deck width49 ft (14.9 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,723 (2015)
Projected traffic15,296 by 2047
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 7th Standard RD EB over Calloway Canal built?

It was built in 2010, making it 15 years old in 2025.

What condition is 7th Standard RD EB over Calloway Canal 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 January 2025.

How much traffic does 7th Standard RD EB over Calloway Canal carry?

About 9,723 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is 7th Standard RD EB over Calloway Canal?

The structure is 88 ft (26.8 m) long with a longest span of 88 ft (26.8 m) and a deck 49 ft wide.

Who owns 7th Standard RD EB over Calloway Canal?

It is owned by the City or Municipal Highway Agency.