US Bridges

SR821 Rmp to I75SB over I-75/I-75 Express Lanes

Good

Miami-Dade County, Florida · 3.47MI S of SR-823 · Structure no. 871110

Built
2018
7 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
984 ft
5 main spans
Daily traffic
7,100
2024 count
Owner
State
State Highway Agency

About this bridge

SR821 Rmp to I75SB over I-75/I-75 Express Lanes is a steel continuous box beam or girders - single or spread carrying SR821 Rmp to I75SB over I-75/I-75 Express Lanes in Miami-Dade County, Florida. It was built in 2018, so it is 7 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 7,100 vehicles a day, roughly 14% of them trucks, projected to reach 12,318 by 2044. The structure is 984 ft (299.9 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR821 Rmp to I75SB
CrossesI-75/I-75 Express Lanes
Location3.47MI S of SR-823
RouteInterstate 75
StateFlorida
Coordinates25.95264, -80.35194
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating37.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length984 ft (299.9 m)
Longest span238 ft (72.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2024)
Projected traffic12,318 by 2044
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR821 Rmp to I75SB over I-75/I-75 Express Lanes built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR821 Rmp to I75SB over I-75/I-75 Express Lanes 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 December 2024.

How much traffic does SR821 Rmp to I75SB over I-75/I-75 Express Lanes carry?

About 7,100 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SR821 Rmp to I75SB over I-75/I-75 Express Lanes?

The structure is 984 ft (299.9 m) long with a longest span of 238 ft (72.4 m) and a deck 43 ft wide.

Who owns SR821 Rmp to I75SB over I-75/I-75 Express Lanes?

It is owned by the State Highway Agency.