Structure 1897 · Franklin County, MO

Mo 185 S over Bourbeuse Rvr

Carries Mo 185 S over Bourbeuse Rvr, S 7 T 42 N R 2 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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,190 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

2,190 ft end to end, longest span 112 ft: about 6.1 football fields. 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.

Built197551 years old
Length2190.0 ft667.5 m
Daily traffic1,618counted 2024
Last inspectedJuly 2024every 24 months

Location

StateMissouri
CountyFranklin
LocationS 7 T 42 N R 2 W
CarriesMo 185 S
CrossesBourbeuse Rvr
Coordinates38.39616, -91.18634

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2190.0 ft (667.5 m)
Max Span111.9 ft (34.1 m)
Deck Width42.7 ft (13 m)
Deck Area8677.5 sq m
Main Spans19
Year Built1975

Traffic

Avg Daily Traffic1,618 (2024)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1897

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