US Bridges

I-75 NB over CR 846 (immokalee Rd)

Good

Collier County, Florida · 4.1 MI N/O CR-896 · Structure no. 030322

Built
2010
15 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
2 main spans
Daily traffic
44,553
2022 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over CR 846 (immokalee Rd) is a steel continuous stringer/multi-beam or girder carrying I-75 NB over CR 846 (immokalee Rd) in Collier County, Florida. It was built in 2010, so it is 15 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 44,553 vehicles a day, roughly 11% of them trucks, projected to reach 77,299 by 2044. The structure is 178 ft (54.3 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesI-75 NB
CrossesCR 846 (immokalee Rd)
Location4.1 MI N/O CR-896
RouteInterstate 75
CountyCollier County
StateFlorida
Coordinates26.27289, -81.74256
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.4 US tons
Inventory rating49.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length178 ft (54.3 m)
Longest span89 ft (27.1 m)
Deck width68 ft (20.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic44,553 (2022)
Projected traffic77,299 by 2044
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 NB over CR 846 (immokalee Rd) built?

It was built in 2010, making it 15 years old in 2025.

What condition is I-75 NB over CR 846 (immokalee Rd) 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 February 2024.

How much traffic does I-75 NB over CR 846 (immokalee Rd) carry?

About 44,553 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is I-75 NB over CR 846 (immokalee Rd)?

The structure is 178 ft (54.3 m) long with a longest span of 89 ft (27.1 m) and a deck 68 ft wide.

Who owns I-75 NB over CR 846 (immokalee Rd)?

It is owned by the State Highway Agency.