US Bridges

I-195 (SR-112) over Biscayne Bay

Fair

Miami-Dade County, Florida · 2.4 Miles E of US-1 · Structure no. 870302

Built
1959
66 years old, rebuilt 1991
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,138 ft
17 main spans
Daily traffic
121,000
2022 count
Owner
State
State Highway Agency

About this bridge

I-195 (SR-112) over Biscayne Bay is a prestressed concrete stringer/multi-beam or girder carrying I-195 (SR-112) over Biscayne Bay in Miami-Dade County, Florida. It was built in 1959 and reconstructed in 1991, so it is 66 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 6 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 121,000 vehicles a day, roughly 4% of them trucks, projected to reach 209,935 by 2044. The structure is 1,138 ft (346.9 m) long and 126 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-195 (SR-112)
CrossesBiscayne Bay
Location2.4 Miles E of US-1
RouteInterstate 195
CountyMiami-Dade County
StateFlorida
Coordinates25.81053, -80.14867
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length1,138 ft (346.9 m)
Longest span98 ft (29.9 m)
Deck width126 ft (38.4 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic121,000 (2022)
Projected traffic209,935 by 2044
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$292,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was I-195 (SR-112) over Biscayne Bay built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1991.

What condition is I-195 (SR-112) over Biscayne Bay 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 October 2023.

How much traffic does I-195 (SR-112) over Biscayne Bay carry?

About 121,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-195 (SR-112) over Biscayne Bay?

The structure is 1,138 ft (346.9 m) long with a longest span of 98 ft (29.9 m) and a deck 126 ft wide.

Who owns I-195 (SR-112) over Biscayne Bay?

It is owned by the State Highway Agency.