Structure 90I00260021 · Washington County, TN

I26 RT LN over SR 354 & Boones Creek

Carries I26 RT LN over SR 354 & Boones Creek, 1.2 M SW Jct I26 & Sr354.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT291 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

291 ft end to end, longest span 88 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.

Built196957 years old
Length291.0 ft88.7 m
Daily traffic60,503counted 2021
Last inspectedSeptember 2023every 24 months

Location

StateTennessee
CountyWashington
Location1.2 M SW Jct I26 & Sr354
CarriesI26 RT LN
CrossesSR 354 & Boones Creek
Coordinates36.37824, -82.42654

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length291.0 ft (88.7 m)
Max Span87.9 ft (26.8 m)
Deck Width44.0 ft (13.4 m)
Deck Area1188.6 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic60,503 (2021)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number90I00260021

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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