Structure 28133 · Boone County, MO

Park Access RD over Flat CR

Carries Park Access RD over Flat CR, S 22 T 48 N R 13 W.

Overall conditionPoor

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

How ratings work
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT69 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9Substructure 4/9 · sets the rating

69 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 deck arch.

Built195076 years old
Length68.9 ft21 m
Daily traffic75counted 2023
Last inspectedDecember 2024every 24 months

Location

StateMissouri
CountyBoone
LocationS 22 T 48 N R 13 W
CarriesPark Access RD
CrossesFlat CR
Coordinates38.93871, -92.35066

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length68.9 ft (21 m)
Max Span24.0 ft (7.3 m)
Deck Width25.9 ft (7.9 m)
Deck Area165.9 sq m
Main Spans1
Year Built1950

Traffic

Avg Daily Traffic75 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number28133

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.

Nearby Bridges