US Bridges

Old Kingston Grade over Grant Canal

Fair

Fresno County, California · 0.25 MI S/O Mt Whitney Av · Structure no. 42C0374

Built
1949
76 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
44 ft
2 main spans
Daily traffic
100
2010 count
Owner
County
County Highway Agency

About this bridge

Old Kingston Grade over Grant Canal is a concrete continuous slab carrying Old Kingston Grade over Grant Canal in Fresno County, California. It was built in 1949, so it is 76 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 5 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 180 by 2043. The structure is 44 ft (13.4 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOld Kingston Grade
CrossesGrant Canal
Location0.25 MI S/O Mt Whitney Av
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.42698, -119.69512
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span22 ft (6.6 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2010)
Projected traffic180 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Kingston Grade over Grant Canal built?

It was built in 1949, making it 76 years old in 2025.

What condition is Old Kingston Grade over Grant 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 2024.

How much traffic does Old Kingston Grade over Grant Canal carry?

About 100 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Old Kingston Grade over Grant Canal?

The structure is 44 ft (13.4 m) long with a longest span of 22 ft (6.6 m) and a deck 24 ft wide.

Who owns Old Kingston Grade over Grant Canal?

It is owned by the County Highway Agency.