US Bridges

SR 112 WB over NW 17th Avenue

Good

Miami-Dade County, Florida · 1.1 Mile West of I 95 · Structure no. 870111

Built
1960
65 years old, rebuilt 1988
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
46,250
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 112 WB over NW 17th Avenue is a prestressed concrete stringer/multi-beam or girder carrying SR 112 WB over NW 17th Avenue in Miami-Dade County, Florida. It was built in 1960 and reconstructed in 1988, so it is 65 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 46,250 vehicles a day, roughly 4% of them trucks, projected to reach 80,244 by 2042. The structure is 143 ft (43.6 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR 112 WB
CrossesNW 17th Avenue
Location1.1 Mile West of I 95
RouteState Highway 112
StateFlorida
Coordinates25.8124, -80.224
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span63 ft (19.2 m)
Deck width80 ft (24.4 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,250 (2024)
Projected traffic80,244 by 2042
Trucks4%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 SR 112 WB over NW 17th Avenue built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1988.

What condition is SR 112 WB over NW 17th Avenue 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 October 2024.

How much traffic does SR 112 WB over NW 17th Avenue carry?

About 46,250 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 112 WB over NW 17th Avenue?

The structure is 143 ft (43.6 m) long with a longest span of 63 ft (19.2 m) and a deck 80 ft wide.

Who owns SR 112 WB over NW 17th Avenue?

It is owned by the State Toll Authority.