US Bridges

NW186 ST(SR860) EB over I-75

Fair

Miami-Dade County, Florida · 1MI S of Broward Co. Line · Structure no. 870595

Built
1985
40 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
393 ft
5 main spans
Daily traffic
24,250
2024 count
Owner
State
State Highway Agency

About this bridge

NW186 ST(SR860) EB over I-75 is a prestressed concrete stringer/multi-beam or girder carrying NW186 ST(SR860) EB over I-75 in Miami-Dade County, Florida. It was built in 1985, so it is 40 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 24,250 vehicles a day, roughly 4% of them trucks, projected to reach 41,206 by 2044. The structure is 393 ft (119.7 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNW186 ST(SR860) EB
CrossesI-75
Location1MI S of Broward Co. Line
RouteState Highway 860
CountyMiami-Dade County
StateFlorida
Coordinates25.94222, -80.35108
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length393 ft (119.7 m)
Longest span114 ft (34.7 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,250 (2024)
Projected traffic41,206 by 2044
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 NW186 ST(SR860) EB over I-75 built?

It was built in 1985, making it 40 years old in 2025.

What condition is NW186 ST(SR860) EB over I-75 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does NW186 ST(SR860) EB over I-75 carry?

About 24,250 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is NW186 ST(SR860) EB over I-75?

The structure is 393 ft (119.7 m) long with a longest span of 114 ft (34.7 m) and a deck 30 ft wide.

Who owns NW186 ST(SR860) EB over I-75?

It is owned by the State Highway Agency.