US Bridges

IRR SR 85; FAP 075 over Gunsight Wash

Fair

Pima County, Arizona · 2.1 MI South of JCT SR 86 · Structure no. 00274

Built
1943
82 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
185 ft
8 main spans
Daily traffic
1,498
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 85; FAP 075 over Gunsight Wash is a concrete continuous slab carrying IRR SR 85; FAP 075 over Gunsight Wash in Pima County, Arizona. It was built in 1943, so it is 82 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 1,498 vehicles a day, roughly 3% of them trucks, projected to reach 1,508 by 2042. The structure is 185 ft (56.4 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR SR 85; FAP 075
CrossesGunsight Wash
Location2.1 MI South of JCT SR 86
RouteState Highway 85
CountyPima County
StateArizona
Coordinates32.24, -112.7499
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length185 ft (56.4 m)
Longest span22 ft (6.7 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,498 (2022)
Projected traffic1,508 by 2042
Trucks3%
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 Gunsight Wash built?

It was built in 1943, making it 82 years old in 2025.

What condition is IRR SR 85; FAP 075 over Gunsight 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 December 2023.

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

About 1,498 vehicles per day (2022 count), of which roughly 3% are trucks.

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

The structure is 185 ft (56.4 m) long with a longest span of 22 ft (6.7 m) and a deck 29 ft wide.

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

It is owned by the State Highway Agency.