US Bridges

W Harlan Ave over Murphy Slough

Fair

Fresno County, California · 1.25 MI W of S Marks Ave · Structure no. 42C0292

Built
1981
44 years old
Condition
Fair
inspected February 2022
Type
Culvert
Concrete Continuous
Length
37 ft
2 main spans
Daily traffic
600
2012 count
Owner
County
County Highway Agency

About this bridge

W Harlan Ave over Murphy Slough is a concrete continuous culvert carrying W Harlan Ave over Murphy Slough in Fresno County, California. It was built in 1981, so it is 44 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 600 vehicles a day, roughly 1% of them trucks, projected to reach 924 by 2040. The structure is 37 ft (11.3 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesW Harlan Ave
CrossesMurphy Slough
Location1.25 MI W of S Marks Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.44534, -119.87394
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span18 ft (5.5 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2012)
Projected traffic924 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 W Harlan Ave over Murphy Slough built?

It was built in 1981, making it 44 years old in 2025.

What condition is W Harlan Ave over Murphy Slough 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 February 2022.

How much traffic does W Harlan Ave over Murphy Slough carry?

About 600 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is W Harlan Ave over Murphy Slough?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.5 m) and a deck 32 ft wide.

Who owns W Harlan Ave over Murphy Slough?

It is owned by the County Highway Agency.