US Bridges

SR 821 NB Rp 27.3 over Snapper Creek Canal

Good

Miami-Dade County, Florida · NB on Ramp NW 12th ST · Structure no. 870945

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
33 ft
1 main span
Daily traffic
3,000
2021 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 821 NB Rp 27.3 over Snapper Creek Canal is a aluminum, wrought iron, or cast iron culvert carrying SR 821 NB Rp 27.3 over Snapper Creek Canal in Miami-Dade County, Florida. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,000 vehicles a day, roughly 5% of them trucks, projected to reach 4,000 by 2042. The structure is 33 ft (10.2 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 821 NB Rp 27.3
CrossesSnapper Creek Canal
LocationNB on Ramp NW 12th ST
RouteState Highway SR821
CountyMiami-Dade County
StateFlorida
Coordinates25.78689, -80.38487
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating110.1 US tons
Inventory rating97.2 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHL 93
Structure length33 ft (10.2 m)
Longest span33 ft (10.2 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,000 (2021)
Projected traffic4,000 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemNo

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 SR 821 NB Rp 27.3 over Snapper Creek Canal built?

It was built in 2021, making it 4 years old in 2025.

What condition is SR 821 NB Rp 27.3 over Snapper Creek 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 September 2023.

How much traffic does SR 821 NB Rp 27.3 over Snapper Creek Canal carry?

About 3,000 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is SR 821 NB Rp 27.3 over Snapper Creek Canal?

The structure is 33 ft (10.2 m) long with a longest span of 33 ft (10.2 m) and a deck 20 ft wide.

Who owns SR 821 NB Rp 27.3 over Snapper Creek Canal?

It is owned by the State Toll Authority.