US Bridges

SR91 NB Tpk 2.242 over SR 91 Tpk & Canal

Good

Miami-Dade County, Florida · 1/2 Mile N of NW 199 ST · Structure no. 870701

Built
1988
37 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
783 ft
5 main spans
Daily traffic
5,450
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR91 NB Tpk 2.242 over SR 91 Tpk & Canal is a steel continuous stringer/multi-beam or girder carrying SR91 NB Tpk 2.242 over SR 91 Tpk & Canal in Miami-Dade County, Florida. It was built in 1988, so it is 37 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 5,450 vehicles a day, roughly 10% of them trucks, projected to reach 9,456 by 2042. The structure is 783 ft (238.7 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR91 NB Tpk 2.242
CrossesSR 91 Tpk & Canal
Location1/2 Mile N of NW 199 ST
RouteState Highway 91
CountyMiami-Dade County
StateFlorida
Coordinates25.95977, -80.22924
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.4 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length783 ft (238.7 m)
Longest span162 ft (49.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic5,450 (2023)
Projected traffic9,456 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR91 NB Tpk 2.242 over SR 91 Tpk & Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is SR91 NB Tpk 2.242 over SR 91 Tpk & Canal 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 2023.

How much traffic does SR91 NB Tpk 2.242 over SR 91 Tpk & Canal carry?

About 5,450 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR91 NB Tpk 2.242 over SR 91 Tpk & Canal?

The structure is 783 ft (238.7 m) long with a longest span of 162 ft (49.4 m) and a deck 43 ft wide.

Who owns SR91 NB Tpk 2.242 over SR 91 Tpk & Canal?

It is owned by the State Toll Authority.