US Bridges

I-75 NB (SR-93) over L-28 Canal

Good

Collier County, Florida · 27.5MI E of SR29 (MM51.5) · Structure no. 030283

Built
1990
35 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
360 ft
9 main spans
Daily traffic
13,750
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 NB (SR-93) over L-28 Canal is a concrete continuous slab carrying I-75 NB (SR-93) over L-28 Canal in Collier County, Florida. It was built in 1990, so it is 35 years old, younger 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 13,750 vehicles a day, roughly 18% of them trucks, projected to reach 23,856 by 2044. The structure is 360 ft (109.8 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 NB (SR-93)
CrossesL-28 Canal
Location27.5MI E of SR29 (MM51.5)
RouteInterstate 75
CountyCollier County
StateFlorida
Coordinates26.17251, -80.89437
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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.2 US tons
Inventory rating29.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20 + Mod
Structure length360 ft (109.8 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,750 (2024)
Projected traffic23,856 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn an Interstate toll segment under Secretarial agreement
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 (SR-93) over L-28 Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is I-75 NB (SR-93) over L-28 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 2024.

How much traffic does I-75 NB (SR-93) over L-28 Canal carry?

About 13,750 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I-75 NB (SR-93) over L-28 Canal?

The structure is 360 ft (109.8 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns I-75 NB (SR-93) over L-28 Canal?

It is owned by the State Highway Agency.