Structure 36996 · Howell County, MO

US 63 S over Bnsf

Carries US 63 S over Bnsf, S 15 T 23 N R 7 W.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT261 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

261 ft end to end, longest span 105 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 tee-beam bridge.

Built20233 years old
Length261.5 ft79.7 m
Daily traffic7,777counted 2024
Last inspectedDecember 2024every 24 months

Location

StateMissouri
CountyHowell
LocationS 15 T 23 N R 7 W
CarriesUS 63 S
CrossesBnsf
Coordinates36.66087, -91.71375

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length261.5 ft (79.7 m)
Max Span105.0 ft (32 m)
Deck Width46.6 ft (14.2 m)
Deck Area1131.7 sq m
Main Spans3
Year Built2023

Traffic

Avg Daily Traffic7,777 (2024)
Truck Traffic22%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number36996

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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