US Bridges

SR77; Miracle Mile over Wash

Good

Pima County, Arizona · 130 W JCT Flowing Wells · Structure no. 05219

Built
1931
94 years old, rebuilt 1957
Condition
Good
inspected February 2022
Type
Culvert
Concrete Continuous
Length
40 ft
4 main spans
Daily traffic
36,824
2016 count
Owner
State
State Highway Agency

About this bridge

SR77; Miracle Mile over Wash is a concrete continuous culvert carrying SR77; Miracle Mile over Wash in Pima County, Arizona. It was built in 1931 and reconstructed in 1957, so it is 94 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 36,824 vehicles a day, roughly 9% of them trucks, projected to reach 36,834 by 2036. The structure is 40 ft (12.2 m) long and 108 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR77; Miracle Mile
CrossesWash
Location130 W JCT Flowing Wells
RouteState Highway 77
CountyPima County
StateArizona
Coordinates32.2612, -110.9955
Functional classUrban Other Principal Arterial

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 inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span8 ft (2.4 m)
Deck width108 ft (32.9 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,824 (2016)
Projected traffic36,834 by 2036
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR77; Miracle Mile over Wash built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1957.

What condition is SR77; Miracle Mile over 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 February 2022.

How much traffic does SR77; Miracle Mile over Wash carry?

About 36,824 vehicles per day (2016 count), of which roughly 9% are trucks.

How long is SR77; Miracle Mile over Wash?

The structure is 40 ft (12.2 m) long with a longest span of 8 ft (2.4 m) and a deck 108 ft wide.

Who owns SR77; Miracle Mile over Wash?

It is owned by the State Highway Agency.