Structure 33SR0080007 · Hamilton County, TN

Fau 8 over Tn River & Fau 5395

Carries Fau 8 over Tn River & Fau 5395, Market Street Bridge.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,000 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

2,000 ft end to end: about 5.6 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 bascule bridge (drawn closed).

Built1917rebuilt 2007
Length2000.0 ft609.6 m
Daily traffic26,697counted 2021
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountyHamilton
LocationMarket Street Bridge
CarriesFau 8
CrossesTn River & Fau 5395
Coordinates35.05655, -85.30960

Physical Characteristics

MaterialSteel
DesignMovable - Bascule
Total Length2000.0 ft (609.6 m)
Max Span358.9 ft (109.4 m)
Deck Width56.1 ft (17.1 m)
Deck Area10424.2 sq m
Main Spans1
Year Built1917 (reconstructed 2007)

Traffic

Avg Daily Traffic26,697 (2021)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical8 — Stable, low risk
Structure Number33SR0080007

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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