US Bridges

SR821 NB Heft 6.04 over SW 137th Avenue

Good

Miami-Dade County, Florida · 0.85 Miles N of Exit 5 · Structure no. 870382

Built
1973
52 years old, rebuilt 2019
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
419 ft
6 main spans
Daily traffic
43,350
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR821 NB Heft 6.04 over SW 137th Avenue is a prestressed concrete stringer/multi-beam or girder carrying SR821 NB Heft 6.04 over SW 137th Avenue in Miami-Dade County, Florida. It was built in 1973 and reconstructed in 2019, so it is 52 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 43,350 vehicles a day, roughly 6% of them trucks, projected to reach 75,212 by 2042. The structure is 419 ft (127.7 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR821 NB Heft 6.04
CrossesSW 137th Avenue
Location0.85 Miles N of Exit 5
RouteState Highway 821
StateFlorida
Coordinates25.51038, -80.41252
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length419 ft (127.7 m)
Longest span87 ft (26.4 m)
Deck width79 ft (24.1 m)
Roadway width72 ft (21.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,350 (2024)
Projected traffic75,212 by 2042
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 SR821 NB Heft 6.04 over SW 137th Avenue built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2019.

What condition is SR821 NB Heft 6.04 over SW 137th 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 February 2024.

How much traffic does SR821 NB Heft 6.04 over SW 137th Avenue carry?

About 43,350 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is SR821 NB Heft 6.04 over SW 137th Avenue?

The structure is 419 ft (127.7 m) long with a longest span of 87 ft (26.4 m) and a deck 79 ft wide.

Who owns SR821 NB Heft 6.04 over SW 137th Avenue?

It is owned by the State Toll Authority.