Structure 226430 · Lucas County, IA

S23 200th AVE over Bnsf Rr

Carries S23 200th AVE over Bnsf Rr, 072221402.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT322 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

322 ft end to end: 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 deck arch.

Built1937rebuilt 1991
Length321.9 ft98.1 m
Daily traffic1,090counted 2022
Last inspectedNovember 2023every 24 months

Location

StateIowa
CountyLucas
Location072221402
CarriesS23 200th AVE
CrossesBnsf Rr
Coordinates41.04016, -93.36583

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length321.9 ft (98.1 m)
Max Span107.9 ft (32.9 m)
Deck Width32.2 ft (9.8 m)
Deck Area961.4 sq m
Main Spans1
Year Built1937 (reconstructed 1991)

Traffic

Avg Daily Traffic1,090 (2022)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour CriticalNot applicable
Structure Number000000000226430

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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