Structure 1003 · Apache County, AZ

IRR US 191 over Chinle Wash

Carries IRR US 191 over Chinle Wash, 40.3 Mi S Jct US 160.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT658 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

658 ft end to end, longest span 50 ft: about 1.8 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built196462 years old
Length658.1 ft200.6 m
Daily traffic1,504counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateArizona
CountyApache
Location40.3 Mi S Jct US 160
CarriesIRR US 191
CrossesChinle Wash
Coordinates36.46482, -109.59261

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length658.1 ft (200.6 m)
Max Span49.9 ft (15.2 m)
Deck Width27.9 ft (8.5 m)
Deck Area1705.1 sq m
Main Spans13
Year Built1964

Traffic

Avg Daily Traffic1,504 (2022)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number01003

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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