Structure 30190 · Collier County, FL

I-75 NB (sr93) over Rock Canal

Carries I-75 NB (sr93) over Rock Canal, 0.4mi North Of Cr846.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · 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 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

120 ft end to end, longest span 30 ft. 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.

Built1980rebuilt 2009
Length120.1 ft36.6 m
Daily traffic51,944counted 2023
Last inspectedApril 2023every 24 months

Location

StateFlorida
CountyCollier
Location0.4mi North Of Cr846
CarriesI-75 NB (sr93)
CrossesRock Canal
Coordinates26.27793, -81.74258

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length120.1 ft (36.6 m)
Max Span29.9 ft (9.1 m)
Deck Width64.6 ft (19.7 m)
Deck Area721.0 sq m
Main Spans4
Year Built1980 (reconstructed 2009)

Traffic

Avg Daily Traffic51,944 (2023)
Truck Traffic9%
Lanes On Bridge3

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number030190

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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