US Bridges

NW 37th Avenue over Tamiami Canal

FairPosted for load

Miami-Dade County, Florida · 200FT. S of NW 21st St. · Structure no. 874002

Built
1969
56 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
17,151
2024 count
Owner
County
County Highway Agency

About this bridge

NW 37th Avenue over Tamiami Canal is a prestressed concrete slab carrying NW 37th Avenue over Tamiami Canal in Miami-Dade County, Florida. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.

It carries about 17,151 vehicles a day, roughly 5% of them trucks, projected to reach 27,607 by 2042. The structure is 150 ft (45.7 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNW 37th Avenue
CrossesTamiami Canal
Location200FT. S of NW 21st St.
RouteCounty Highway 0
CountyMiami-Dade County
StateFlorida
Coordinates25.79417, -80.25619
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.4 US tons
Inventory rating18 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length150 ft (45.7 m)
Longest span51 ft (15.4 m)
Deck width81 ft (24.8 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,151 (2024)
Projected traffic27,607 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was NW 37th Avenue over Tamiami Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is NW 37th Avenue over Tamiami Canal 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 August 2024.

How much traffic does NW 37th Avenue over Tamiami Canal carry?

About 17,151 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is NW 37th Avenue over Tamiami Canal?

The structure is 150 ft (45.7 m) long with a longest span of 51 ft (15.4 m) and a deck 81 ft wide.

Who owns NW 37th Avenue over Tamiami Canal?

It is owned by the County Highway Agency.