Structure 47I01400017 · Knox County, TN

I140 over Sinking Cr. Embayment

Carries I140 over Sinking Cr. Embayment, 2 M NW Of Sr332.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT360 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

360 ft end to end, longest span 180 ft: about 5 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.

Built199333 years old
Length359.9 ft109.7 m
Daily traffic54,523counted 2021
Last inspectedJune 2024every 24 months

Location

StateTennessee
CountyKnox
Location2 M NW Of Sr332
CarriesI140
CrossesSinking Cr. Embayment
Coordinates35.88375, -84.10130

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length359.9 ft (109.7 m)
Max Span180.1 ft (54.9 m)
Deck Width87.9 ft (26.8 m)
Deck Area2940.0 sq m
Main Spans2
Year Built1993

Traffic

Avg Daily Traffic54,523 (2021)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number47I01400017

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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