US Bridges

I-75 NB (SR93) over Rock Canal

Good

Collier County, Florida · 0.4MI North of CR846 · Structure no. 030190

Built
1980
45 years old, rebuilt 2009
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
51,944
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 NB (SR93) over Rock Canal is a concrete continuous slab carrying I-75 NB (SR93) over Rock Canal in Collier County, Florida. It was built in 1980 and reconstructed in 2009, so it is 45 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 51,944 vehicles a day, roughly 9% of them trucks, projected to reach 90,123 by 2042. The structure is 120 ft (36.6 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 NB (SR93)
CrossesRock Canal
Location0.4MI North of CR846
RouteInterstate 75
CountyCollier County
StateFlorida
Coordinates26.27793, -81.74257
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width65 ft (19.7 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,944 (2023)
Projected traffic90,123 by 2042
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 NB (SR93) over Rock Canal built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2009.

What condition is I-75 NB (SR93) over Rock Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does I-75 NB (SR93) over Rock Canal carry?

About 51,944 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-75 NB (SR93) over Rock Canal?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 65 ft wide.

Who owns I-75 NB (SR93) over Rock Canal?

It is owned by the State Highway Agency.