US Bridges

SR a 89 over Sheephead

Good

Yavapai County, Arizona · 4.9 MI NE of JCT SR 260 · Structure no. 05195

Built
1938
87 years old, rebuilt 2002
Condition
Good
inspected August 2021
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
14,845
2019 count
Owner
State
State Highway Agency

About this bridge

SR a 89 over Sheephead is a concrete continuous culvert carrying SR a 89 over Sheephead in Yavapai County, Arizona. It was built in 1938 and reconstructed in 2002, so it is 87 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,845 vehicles a day, roughly 7% of them trucks, projected to reach 14,855 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesSR a 89
CrossesSheephead
Location4.9 MI NE of JCT SR 260
RouteState Highway 89
CountyYavapai County
StateArizona
Coordinates34.7665, -111.9412
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating80 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,845 (2019)
Projected traffic14,855 by 2039
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR a 89 over Sheephead built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2002.

What condition is SR a 89 over Sheephead in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2021.

How much traffic does SR a 89 over Sheephead carry?

About 14,845 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is SR a 89 over Sheephead?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m).

Who owns SR a 89 over Sheephead?

It is owned by the State Highway Agency.