Structure 1799 · Yavapai County, AZ

40b over Old SR 66

Carries 40b over Old SR 66, 0.7 Mi N Jct I-40.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT176 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

176 ft end to end, longest span 87 ft: about 2 semi-trucks nose to tail. 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 multi-beam bridge.

Built1978rebuilt 2019
Length175.9 ft53.6 m
Daily traffic1,654counted 2022
Last inspectedJune 2024every 24 months

Location

StateArizona
CountyYavapai
Location0.7 Mi N Jct I-40
Carries40b
CrossesOld SR 66
Coordinates35.32940, -112.89030

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length175.9 ft (53.6 m)
Max Span86.9 ft (26.5 m)
Deck Width47.2 ft (14.4 m)
Deck Area771.8 sq m
Main Spans3
Year Built1978 (reconstructed 2019)

Traffic

Avg Daily Traffic1,654 (2022)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number01799

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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