Structure 47241 · Scott County, IA

Ia 130 over E Branch Mud Creek

Carries Ia 130 over E Branch Mud Creek, 1.8 Mi. E Of Jct. SR Y40.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT114 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

114 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.

Built1977rebuilt 2020
Length113.8 ft34.7 m
Daily traffic1,300counted 2022
Last inspectedMay 2023every 24 months

Location

StateIowa
CountyScott
Location1.8 Mi. E Of Jct. SR Y40
CarriesIa 130
CrossesE Branch Mud Creek
Coordinates41.65646, -90.75221

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length113.8 ft (34.7 m)
Max Span43.0 ft (13.1 m)
Deck Width43.3 ft (13.2 m)
Deck Area458.0 sq m
Main Spans3
Year Built1977 (reconstructed 2020)

Traffic

Avg Daily Traffic1,300 (2022)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000047241

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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