US Bridges

SR 188 over Miami Wash

Good

Gila County, Arizona · 2.1 MI North JCT US 60 · Structure no. 01816

Built
1975
50 years old, rebuilt 2006
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
233 ft
3 main spans
Daily traffic
2,290
2022 count
Owner
State
State Highway Agency

About this bridge

SR 188 over Miami Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 188 over Miami Wash in Gila County, Arizona. It was built in 1975 and reconstructed in 2006, so it is 50 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 2,290 vehicles a day, roughly 37% of them trucks, projected to reach 2,300 by 2042. The structure is 233 ft (71 m) long and 71 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesSR 188
CrossesMiami Wash
Location2.1 MI North JCT US 60
RouteState Highway 188
CountyGila County
StateArizona
Coordinates33.4423, -110.8356
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length233 ft (71 m)
Longest span76 ft (23.2 m)
Deck width71 ft (21.5 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,290 (2022)
Projected traffic2,300 by 2042
Trucks37%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 188 over Miami Wash built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2006.

What condition is SR 188 over Miami 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 March 2024.

How much traffic does SR 188 over Miami Wash carry?

About 2,290 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is SR 188 over Miami Wash?

The structure is 233 ft (71 m) long with a longest span of 76 ft (23.2 m) and a deck 71 ft wide.

Who owns SR 188 over Miami Wash?

It is owned by the State Highway Agency.