Structure 8982 · Maricopa County, AZ

Signal Butte RD over Drainage Ditch

Carries Signal Butte RD over Drainage Ditch, N/ Broadway RD.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

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

Elevation

Side view, colored by inspection rating
21 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 21 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1987rebuilt 1998
Length21.0 ft6.4 m
Daily traffic12,973counted 2023
Last inspectedJanuary 2025every 36 months

Location

StateArizona
CountyMaricopa
LocationN/ Broadway RD
CarriesSignal Butte RD
CrossesDrainage Ditch
Coordinates33.40804, -111.59806

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length21.0 ft (6.4 m)
Max Span9.8 ft (3 m)
Deck Width87.6 ft (26.7 m)
Deck Area170.9 sq m
Main Spans2
Year Built1987 (reconstructed 1998)

Traffic

Avg Daily Traffic12,973 (2023)
Truck Traffic10%
Lanes On Bridge6

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 36 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number08982

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