US Bridges

I-75 NB (SR-93) over Alligator Creek

Good

Charlotte County, Florida · 3.7 MI S of US-17 · Structure no. 010070

Built
1981
44 years old, rebuilt 2012
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
350 ft
3 main spans
Daily traffic
29,750
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 NB (SR-93) over Alligator Creek is a steel continuous stringer/multi-beam or girder carrying I-75 NB (SR-93) over Alligator Creek in Charlotte County, Florida. It was built in 1981 and reconstructed in 2012, so it is 44 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 29,750 vehicles a day, roughly 18% of them trucks, projected to reach 51,616 by 2044. The structure is 350 ft (106.6 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75 NB (SR-93)
CrossesAlligator Creek
Location3.7 MI S of US-17
RouteInterstate 75
CountyCharlotte County
StateFlorida
Coordinates26.89115, -81.99786
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length350 ft (106.6 m)
Longest span138 ft (42.1 m)
Deck width59 ft (18 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,750 (2022)
Projected traffic51,616 by 2044
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$754,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 NB (SR-93) over Alligator Creek built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2012.

What condition is I-75 NB (SR-93) over Alligator Creek 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 June 2023.

How much traffic does I-75 NB (SR-93) over Alligator Creek carry?

About 29,750 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is I-75 NB (SR-93) over Alligator Creek?

The structure is 350 ft (106.6 m) long with a longest span of 138 ft (42.1 m) and a deck 59 ft wide.

Who owns I-75 NB (SR-93) over Alligator Creek?

It is owned by the State Highway Agency.