US Bridges

Dunlap RD over Mill Creek

Fair

Fresno County, California · 0.5 MI S/O Orchard DR · Structure no. 42C0478

Built
1956
69 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
600
2006 count
Owner
County
County Highway Agency

About this bridge

Dunlap RD over Mill Creek is a concrete slab carrying Dunlap RD over Mill Creek in Fresno County, California. It was built in 1956, so it is 69 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 600 vehicles a day, roughly 4% of them trucks, projected to reach 1,107 by 2041. The structure is 22 ft (6.7 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesDunlap RD
CrossesMill Creek
Location0.5 MI S/O Orchard DR
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.68954, -119.0481
Functional classRural Minor 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.
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 inspectionMay 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2006)
Projected traffic1,107 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Dunlap RD over Mill Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Dunlap RD over Mill Creek 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 May 2024.

How much traffic does Dunlap RD over Mill Creek carry?

About 600 vehicles per day (2006 count), of which roughly 4% are trucks.

How long is Dunlap RD over Mill Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns Dunlap RD over Mill Creek?

It is owned by the County Highway Agency.