Structure 60SR0060084 · Maury County, TN

Fap 6 over Big Bigby Creek / Tsrr

Carries Fap 6 over Big Bigby Creek / Tsrr, 2.5 M.n. SR 20.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT985 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

985 ft end to end, longest span 180 ft: about 2.7 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.

Built199927 years old
Length984.9 ft300.2 m
Daily traffic15,807counted 2021
Last inspectedMarch 2024every 24 months

Location

StateTennessee
CountyMaury
Location2.5 M.n. SR 20
CarriesFap 6
CrossesBig Bigby Creek / Tsrr
Coordinates35.46977, -87.26505

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length984.9 ft (300.2 m)
Max Span180.1 ft (54.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area4022.7 sq m
Main Spans6
Year Built1999

Traffic

Avg Daily Traffic15,807 (2021)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number60SR0060084

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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