US Bridges

IRR SR 85; FAP 075 over Midway Wash

Fair

Maricopa County, Arizona · 27.2 MI S JCT SR B 8 · Structure no. 00176

Built
1937
88 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
101 ft
4 main spans
Daily traffic
1,625
2021 count
Owner
State
State Highway Agency

About this bridge

IRR SR 85; FAP 075 over Midway Wash is a concrete continuous slab carrying IRR SR 85; FAP 075 over Midway Wash in Maricopa County, Arizona. It was built in 1937, so it is 88 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 1,625 vehicles a day, roughly 8% of them trucks, projected to reach 1,635 by 2041. The structure is 101 ft (30.8 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesIRR SR 85; FAP 075
CrossesMidway Wash
Location27.2 MI S JCT SR B 8
RouteState Highway 85
CountyMaricopa County
StateArizona
Coordinates32.5817, -112.8737
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length101 ft (30.8 m)
Longest span25 ft (7.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,625 (2021)
Projected traffic1,635 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 85; FAP 075 over Midway Wash built?

It was built in 1937, making it 88 years old in 2025.

What condition is IRR SR 85; FAP 075 over Midway 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 April 2023.

How much traffic does IRR SR 85; FAP 075 over Midway Wash carry?

About 1,625 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is IRR SR 85; FAP 075 over Midway Wash?

The structure is 101 ft (30.8 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns IRR SR 85; FAP 075 over Midway Wash?

It is owned by the State Highway Agency.