Structure 1872 · Franklin County, MO

RT F S over Meramec Rvr

Carries RT F S over Meramec Rvr, S 13 T 43 N R 2 E.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT749 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

749 ft end to end, longest span 140 ft: about 2.1 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.

Built197155 years old
Length749.0 ft228.3 m
Daily traffic8,314counted 2024
Last inspectedJuly 2024every 24 months

Location

StateMissouri
CountyFranklin
LocationS 13 T 43 N R 2 E
CarriesRT F S
CrossesMeramec Rvr
Coordinates38.46718, -90.73567

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length749.0 ft (228.3 m)
Max Span140.1 ft (42.7 m)
Deck Width46.6 ft (14.2 m)
Deck Area3241.9 sq m
Main Spans7
Year Built1971

Traffic

Avg Daily Traffic8,314 (2024)
Truck Traffic7%
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 Number1872

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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