Structure 16628 · Johnson County, MO

Co RD NE 101 over Blackjack CR

Carries Co RD NE 101 over Blackjack CR, S 13 T 47 N R 25 W.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

30 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.

Built198244 years old
Length29.9 ft9.1 m
Daily traffic65counted 2023
Last inspectedNovember 2024every 24 months

Location

StateMissouri
CountyJohnson
LocationS 13 T 47 N R 25 W
CarriesCo RD NE 101
CrossesBlackjack CR
Coordinates38.87653, -93.71978

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length29.9 ft (9.1 m)
Max Span28.9 ft (8.8 m)
Deck Width20.3 ft (6.2 m)
Deck Area56.4 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic65 (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 Critical4 — Foundations need monitoring
Structure Number16628

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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