Structure 206348 · Roane County, TN

Perimeter Road over Poplar Creek

Carries Perimeter Road over Poplar Creek, 1.05 Km N. Of SR 58.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT292 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

292 ft end to end, longest span 79 ft: 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 multi-beam bridge.

Built199828 years old
Length292.0 ft89 m
Daily traffic760counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyRoane
Location1.05 Km N. Of SR 58
CarriesPerimeter Road
CrossesPoplar Creek
Coordinates35.93769, -84.33839

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length292.0 ft (89 m)
Max Span78.7 ft (24 m)
Deck Width30.2 ft (9.2 m)
Deck Area818.8 sq m
Main Spans4
Year Built1998

Traffic

Avg Daily Traffic760 (2022)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCode 79
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000206348

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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