Structure 23415 · Greene County, MO

Benton AVE over Mna Rr

Carries Benton AVE over Mna Rr, S 13 T 29 N R 22 W.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT980 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

980 ft end to end, longest span 53 ft: about 2.7 football fields. 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 tee-beam bridge.

Built1927rebuilt 1978
Length980.0 ft298.7 m
Daily traffic11,500counted 2024
Last inspectedMay 2024every 24 months

Location

StateMissouri
CountyGreene
LocationS 13 T 29 N R 22 W
CarriesBenton AVE
CrossesMna Rr
Coordinates37.21157, -93.28762

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length980.0 ft (298.7 m)
Max Span53.1 ft (16.2 m)
Deck Width49.9 ft (15.2 m)
Deck Area4540.2 sq m
Main Spans26
Year Built1927 (reconstructed 1978)

Traffic

Avg Daily Traffic11,500 (2024)
Truck Traffic10%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number23415

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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