US Bridges

I-95 NB (870356) over SW8th ST-NW8th St/Miami

Fair

Miami-Dade County, Florida · Downtown Interchg · Structure no. 870453

Built
1967
58 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
6,196 ft
6 main spans
Daily traffic
37,500
2022 count
Owner
State
State Highway Agency

About this bridge

I-95 NB (870356) over SW8th ST-NW8th St/Miami is a steel continuous stringer/multi-beam or girder carrying I-95 NB (870356) over SW8th ST-NW8th St/Miami in Miami-Dade County, Florida. It was built in 1967, so it is 58 years old, older 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 37,500 vehicles a day, roughly 4% of them trucks, projected to reach 65,062 by 2044. The structure is 6,196 ft (1,888.5 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-95 NB (870356)
CrossesSW8th ST-NW8th St/Miami
LocationDowntown Interchg
RouteInterstate 95
CountyMiami-Dade County
StateFlorida
Coordinates25.77042, -80.19917
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.4 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+76 approach)
Design loadHS 20
Structure length6,196 ft (1,888.5 m)
Longest span200 ft (61 m)
Deck width64 ft (19.6 m)
Roadway width61 ft (18.7 m)
Vertical clearance over deck19 ft (5.7 m)

Traffic and service

Average daily traffic37,500 (2022)
Projected traffic65,062 by 2044
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway and waterway
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$551,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-95 NB (870356) over SW8th ST-NW8th St/Miami built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-95 NB (870356) over SW8th ST-NW8th St/Miami 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 December 2023.

How much traffic does I-95 NB (870356) over SW8th ST-NW8th St/Miami carry?

About 37,500 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-95 NB (870356) over SW8th ST-NW8th St/Miami?

The structure is 6,196 ft (1,888.5 m) long with a longest span of 200 ft (61 m) and a deck 64 ft wide.

Who owns I-95 NB (870356) over SW8th ST-NW8th St/Miami?

It is owned by the State Highway Agency.