US Bridges

I 8; WB over Wash

Fair

Maricopa County, Arizona · 32.6 MI W JCT SR 85 · Structure no. 05263

Built
1962
63 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
111 ft
5 main spans
Daily traffic
6,987
2021 count
Owner
State
State Highway Agency

About this bridge

I 8; WB over Wash is a concrete continuous culvert carrying I 8; WB over Wash in Maricopa County, Arizona. It was built in 1962, so it is 63 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 6,987 vehicles a day, roughly 26% of them trucks, projected to reach 6,997 by 2041. The structure is 111 ft (33.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 8; WB
CrossesWash
Location32.6 MI W JCT SR 85
RouteInterstate 8
CountyMaricopa County
StateArizona
Coordinates32.84583, -113.28027
Functional classRural Principal Arterial - Interstate

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 inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length111 ft (33.8 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 traffic6,987 (2021)
Projected traffic6,997 by 2041
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 8; WB over Wash built?

It was built in 1962, making it 63 years old in 2025.

What condition is I 8; WB over Wash 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 March 2023.

How much traffic does I 8; WB over Wash carry?

About 6,987 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I 8; WB over Wash?

The structure is 111 ft (33.8 m) long with a longest span of 12 ft (3.7 m).

Who owns I 8; WB over Wash?

It is owned by the State Highway Agency.