Structure 16788 · Johnson County, MO

Co RD NE 451 over Mulkey CR

Carries Co RD NE 451 over Mulkey CR, S 27 T 48 N R 25 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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

41 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built199432 years old
Length41.0 ft12.5 m
Daily traffic45counted 2023
Last inspectedNovember 2024every 24 months

Location

StateMissouri
CountyJohnson
LocationS 27 T 48 N R 25 W
CarriesCo RD NE 451
CrossesMulkey CR
Coordinates38.91896, -93.65861

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length41.0 ft (12.5 m)
Max Span39.0 ft (11.9 m)
Deck Width22.6 ft (6.9 m)
Deck Area86.2 sq m
Main Spans1
Year Built1994

Traffic

Avg Daily Traffic45 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number16788

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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