Structure 120800 · Lee County, FL

Tram Bridge #1 over Estero Bay

Carries Tram Bridge #1 over Estero Bay, 0.75 Mi W/o Sr-685.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT400 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

400 ft end to end, longest span 25 ft: about 6 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 slab bridge.

Built199729 years old
Length399.9 ft121.9 m
Daily traffic100counted 2023
Last inspectedJuly 2023every 24 months

Location

StateFlorida
CountyLee
Location0.75 Mi W/o Sr-685
CarriesTram Bridge #1
CrossesEstero Bay
Coordinates26.39132, -81.87706

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length399.9 ft (121.9 m)
Max Span24.9 ft (7.6 m)
Deck Width18.0 ft (5.5 m)
Deck Area670.5 sq m
Main Spans16
Year Built1997

Traffic

Avg Daily Traffic100 (2023)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number120800

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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