Structure 23SR0200009 · Dyer County, TN

Fas 104 over Obion River

Carries Fas 104 over Obion River, 3.3 M W Jct Sr20&sr182.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT550 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 5/9

550 ft end to end: about 1.5 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 through truss.

Built1948rebuilt 1993
Length549.9 ft167.6 m
Daily traffic483counted 2021
Last inspectedOctober 2023every 24 months

Location

StateTennessee
CountyDyer
Location3.3 M W Jct Sr20&sr182
CarriesFas 104
CrossesObion River
Coordinates36.04914, -89.55789

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length549.9 ft (167.6 m)
Max Span101.0 ft (30.8 m)
Deck Width27.6 ft (8.4 m)
Deck Area1407.8 sq m
Main Spans1
Year Built1948 (reconstructed 1993)

Traffic

Avg Daily Traffic483 (2021)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number23SR0200009

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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