Structure 7676 · Howell County, MO

Mo 142 E over Elkhorn Br

Carries Mo 142 E over Elkhorn Br, S 5 T 21 N R 8 W.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 53 ft across with 4 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built195472 years old
Length52.8 ft16.1 m
Daily traffic322counted 2024
Last inspectedOctober 2024every 24 months

Location

StateMissouri
CountyHowell
LocationS 5 T 21 N R 8 W
CarriesMo 142 E
CrossesElkhorn Br
Coordinates36.51147, -91.86428

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length52.8 ft (16.1 m)
Max Span11.2 ft (3.4 m)
Deck Width22.6 ft (6.9 m)
Deck Area111.1 sq m
Main Spans4
Year Built1954

Traffic

Avg Daily Traffic322 (2024)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number7676

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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