Structure 4900401 · Marion County, IN

Thompson RD over Buck Creek

Carries Thompson RD over Buck Creek, 00.45 E Of Senour RD.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT163 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

163 ft end to end, longest span 65 ft: about 2 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 multi-beam bridge.

Built1958rebuilt 1993
Length163.4 ft49.8 m
Daily traffic2,804counted 2019
Last inspectedJuly 2024every 24 months

Location

StateIndiana
CountyMarion
Location00.45 E Of Senour RD
CarriesThompson RD
CrossesBuck Creek
Coordinates39.69690, -85.96660

Physical Characteristics

MaterialConcrete Continuous
DesignStringer/Multi-beam
Total Length163.4 ft (49.8 m)
Max Span65.0 ft (19.8 m)
Deck Width34.4 ft (10.5 m)
Deck Area522.9 sq m
Main Spans3
Year Built1958 (reconstructed 1993)

Traffic

Avg Daily Traffic2,804 (2019)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number4900401

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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