Structure 20153 · Christian County, MO

Smyrna RD over Finley Rvr

Carries Smyrna RD over Finley Rvr, S 18 T 27 N R 20 W.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 2 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating2/9 · Critical
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT281 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 2/9 · sets the ratingSubstructure 5/9

281 ft end to end: about 4 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 through truss.

Built1912rebuilt 2004
Length280.8 ft85.6 m
Daily traffic300counted 2023
Last inspectedJanuary 2023every 24 months

Location

StateMissouri
CountyChristian
LocationS 18 T 27 N R 20 W
CarriesSmyrna RD
CrossesFinley Rvr
Coordinates37.03709, -93.17123

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length280.8 ft (85.6 m)
Max Span119.1 ft (36.3 m)
Deck Width12.1 ft (3.7 m)
Deck Area316.7 sq m
Main Spans1
Year Built1912 (reconstructed 2004)

Traffic

Avg Daily Traffic300 (2023)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number20153

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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