Structure 8450 · McDonald County, MO

RT C E over Indian CR

Carries RT C E over Indian CR, S 7 T 23 N R 31 W.

Overall conditionFair

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

How ratings work
Deck9/9 · Excellent
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT267 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 7/9Substructure 6/9 · sets the rating

267 ft end to end, longest span 104 ft: 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 multi-beam bridge.

Built1965rebuilt 2024
Length267.1 ft81.4 m
Daily traffic298counted 2024
Last inspectedOctober 2024every 12 months

Location

StateMissouri
CountyMcDonald
LocationS 7 T 23 N R 31 W
CarriesRT C E
CrossesIndian CR
Coordinates36.73242, -94.31209

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length267.1 ft (81.4 m)
Max Span104.0 ft (31.7 m)
Deck Width28.5 ft (8.7 m)
Deck Area708.2 sq m
Main Spans3
Year Built1965 (reconstructed 2024)

Traffic

Avg Daily Traffic298 (2024)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number8450

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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