US Bridges

SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int)

Fair

Miami-Dade County, Florida · Ramp N to W (n NW 199 St) · Structure no. 870702

Built
1988
37 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,199 ft
6 main spans
Daily traffic
2,200
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int) is a steel continuous stringer/multi-beam or girder carrying SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int) 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 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 2,200 vehicles a day, roughly 10% of them trucks, projected to reach 3,817 by 2042. The structure is 1,199 ft (365.5 m) long and 51 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesSR91 NB Tpk 2.241
CrossesSR 91 Tpk (dolphin Int)
LocationRamp N to W (n NW 199 St)
RouteState Highway 91
CountyMiami-Dade County
StateFlorida
Coordinates25.95955, -80.22946
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.9 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length1,199 ft (365.5 m)
Longest span204 ft (62.2 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2023)
Projected traffic3,817 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed4.3 mi (7 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$3.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int) built?

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

What condition is SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int) 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 SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int) carry?

About 2,200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int)?

The structure is 1,199 ft (365.5 m) long with a longest span of 204 ft (62.2 m) and a deck 51 ft wide.

Who owns SR91 NB Tpk 2.241 over SR 91 Tpk (dolphin Int)?

It is owned by the State Toll Authority.