Structure 28305 · Jackson County, MO

17th ST over Blue Rvr

Carries 17th ST over Blue Rvr, S 6 T 49 N R 32 W.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT344 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

344 ft end to end, longest span 132 ft: about 5 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.

Built199828 years old
Length344.2 ft104.9 m
Daily traffic2,208counted 2024
Last inspectedMarch 2024every 24 months

Location

StateMissouri
CountyJackson
LocationS 6 T 49 N R 32 W
Carries17th ST
CrossesBlue Rvr
Coordinates39.08964, -94.49246

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length344.2 ft (104.9 m)
Max Span131.9 ft (40.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area1374.2 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic2,208 (2024)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number28305

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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