Structure H58616B0842 · Graham County, AZ

IRR BIA Route 194 over Local Drainage

Carries IRR BIA Route 194 over Local Drainage, 0.23km SW Of US 70.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT83 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 83 ft across with 7 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built201610 years old
Length83.3 ft25.4 m
Daily traffic500counted 2024
Last inspectedDecember 2024every 24 months

Location

StateArizona
CountyGraham
Location0.23km SW Of US 70
CarriesIRR BIA Route 194
CrossesLocal Drainage
Coordinates33.11537, -110.10853

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length83.3 ft (25.4 m)
Max Span11.2 ft (3.4 m)
Deck Width66.3 ft (20.2 m)
Deck Area513.1 sq m
Main Spans7
Year Built2016

Traffic

Avg Daily Traffic500 (2024)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerBureau of Indian Affairs
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0000H58616B0842

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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