US Bridges

SB 40 over Ash Fork Creek

Fair

Yavapai County, Arizona · 0.2 MI NW JCT I 40 · Structure no. 06583

Built
1934
91 years old, rebuilt 1980
Condition
Fair
inspected June 2022
Type
Culvert
Concrete Continuous
Length
98 ft
9 main spans
Daily traffic
2,195
2021 count
Owner
State
State Highway Agency

About this bridge

SB 40 over Ash Fork Creek is a concrete continuous culvert carrying SB 40 over Ash Fork Creek in Yavapai County, Arizona. It was built in 1934 and reconstructed in 1980, so it is 91 years old, older than the Arizona average of 47.8 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 2,195 vehicles a day, roughly 13% of them trucks, projected to reach 2,205 by 2041. The structure is 98 ft (29.9 m) long and 53 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSB 40
CrossesAsh Fork Creek
Location0.2 MI NW JCT I 40
RouteState Highway 40
CountyYavapai County
StateArizona
Coordinates35.2227, -112.4761
Functional classRural Major 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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span10 ft (3 m)
Deck width53 ft (16.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,195 (2021)
Projected traffic2,205 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SB 40 over Ash Fork Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1980.

What condition is SB 40 over Ash Fork 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 June 2022.

How much traffic does SB 40 over Ash Fork Creek carry?

About 2,195 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is SB 40 over Ash Fork Creek?

The structure is 98 ft (29.9 m) long with a longest span of 10 ft (3 m) and a deck 53 ft wide.

Who owns SB 40 over Ash Fork Creek?

It is owned by the State Highway Agency.