US Bridges

SR821 Heft SB 34.0 over Pennsuco Canal

Good

Miami-Dade County, Florida · 1.2 Miles South of US 27 · Structure no. 870223

Built
1973
52 years old, rebuilt 2022
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
187 ft
3 main spans
Daily traffic
116,100
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR821 Heft SB 34.0 over Pennsuco Canal is a prestressed concrete stringer/multi-beam or girder carrying SR821 Heft SB 34.0 over Pennsuco Canal in Miami-Dade County, Florida. It was built in 1973 and reconstructed in 2022, 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 116,100 vehicles a day, roughly 6% of them trucks, projected to reach 182,200 by 2042. The structure is 187 ft (57.1 m) long and 103 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR821 Heft SB 34.0
CrossesPennsuco Canal
Location1.2 Miles South of US 27
RouteState Highway 821
StateFlorida
Coordinates25.88379, -80.38868
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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.4 US tons
Inventory rating36.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length187 ft (57.1 m)
Longest span70 ft (21.3 m)
Deck width103 ft (31.3 m)
Roadway width100 ft (30.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic116,100 (2024)
Projected traffic182,200 by 2042
Trucks6%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR821 Heft SB 34.0 over Pennsuco Canal built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2022.

What condition is SR821 Heft SB 34.0 over Pennsuco 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 April 2024.

How much traffic does SR821 Heft SB 34.0 over Pennsuco Canal carry?

About 116,100 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is SR821 Heft SB 34.0 over Pennsuco Canal?

The structure is 187 ft (57.1 m) long with a longest span of 70 ft (21.3 m) and a deck 103 ft wide.

Who owns SR821 Heft SB 34.0 over Pennsuco Canal?

It is owned by the State Toll Authority.