US Bridges

SR B 8 over Sand Tank Wash

Good

Maricopa County, Arizona · 0.6 MI W JCT SR 85 · Structure no. 06491

Built
1964
61 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
7,296
2021 count
Owner
State
State Highway Agency

About this bridge

SR B 8 over Sand Tank Wash is a concrete continuous culvert carrying SR B 8 over Sand Tank Wash in Maricopa County, Arizona. It was built in 1964, so it is 61 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 7,296 vehicles a day, roughly 46% of them trucks, projected to reach 7,306 by 2041. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR B 8
CrossesSand Tank Wash
Location0.6 MI W JCT SR 85
RouteState Highway 8
CountyMaricopa County
StateArizona
Coordinates32.94869, -112.70919
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,296 (2021)
Projected traffic7,306 by 2041
Trucks46%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR B 8 over Sand Tank Wash built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR B 8 over Sand Tank Wash 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 April 2023.

How much traffic does SR B 8 over Sand Tank Wash carry?

About 7,296 vehicles per day (2021 count), of which roughly 46% are trucks.

How long is SR B 8 over Sand Tank Wash?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns SR B 8 over Sand Tank Wash?

It is owned by the State Highway Agency.