Structure 147821 · Dubuque County, IA

South Mound RD over No Fork Maquoketa River

Carries South Mound RD over No Fork Maquoketa River, 9001 28 2010.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

113 ft end to end, longest span 43 ft. 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 or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built201610 years old
Length112.9 ft34.4 m
Daily traffic250counted 2021
Last inspectedApril 2023every 24 months

Location

StateIowa
CountyDubuque
Location9001 28 2010
CarriesSouth Mound RD
CrossesNo Fork Maquoketa River
Coordinates42.58598, -90.85562

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length112.9 ft (34.4 m)
Max Span43.0 ft (13.1 m)
Deck Width33.1 ft (10.1 m)
Deck Area347.4 sq m
Main Spans3
Year Built2016

Traffic

Avg Daily Traffic250 (2021)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure Number000000000147821

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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