Structure 2002 · Maricopa County, AZ

Union Hills Drive over Loop 101

Carries Union Hills Drive over Loop 101, 0.4 Mi N Of Jct US 60.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT253 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

253 ft end to end, longest span 125 ft: about 4 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 box-beam bridge.

Built1990rebuilt 2011
Length253.0 ft77.1 m
Daily traffic31,685counted 2021
Last inspectedApril 2023every 24 months

Location

StateArizona
CountyMaricopa
Location0.4 Mi N Of Jct US 60
CarriesUnion Hills Drive
CrossesLoop 101
Coordinates33.65270, -112.23280

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length253.0 ft (77.1 m)
Max Span125.0 ft (38.1 m)
Deck Width147.6 ft (45 m)
Deck Area3469.5 sq m
Main Spans2
Year Built1990 (reconstructed 2011)

Traffic

Avg Daily Traffic31,685 (2021)
Truck Traffic3%
Lanes On Bridge10
Lanes Under Bridge10

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number02002

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.

Nearby Bridges