Structure 32338 · Mercer County, MO

Denver ST over Trib Big Br

Carries Denver ST over Trib Big Br, S 5 T 65 N R 24 W.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT70 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

70 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.

Built200620 years old
Length69.9 ft21.3 m
Daily traffic25counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateMissouri
CountyMercer
LocationS 5 T 65 N R 24 W
CarriesDenver ST
CrossesTrib Big Br
Coordinates40.46047, -93.63001

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length69.9 ft (21.3 m)
Max Span67.9 ft (20.7 m)
Deck Width20.0 ft (6.1 m)
Deck Area129.9 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic25 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number32338

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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