Structure 1038 · Navajo County, AZ

SR 99 over Clear Creek

Carries SR 99 over Clear Creek, 4.4 Mi E Jct SR 87.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT167 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

167 ft end to end: 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 deck arch.

Built195175 years old
Length167.0 ft50.9 m
Daily traffic573counted 2021
Last inspectedNovember 2024every 24 months

Location

StateArizona
CountyNavajo
Location4.4 Mi E Jct SR 87
CarriesSR 99
CrossesClear Creek
Coordinates34.96790, -110.64670

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length167.0 ft (50.9 m)
Max Span129.9 ft (39.6 m)
Deck Width27.9 ft (8.5 m)
Deck Area432.6 sq m
Main Spans1
Year Built1951

Traffic

Avg Daily Traffic573 (2021)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number01038

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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