US Bridges

SR 821 NB 17.9 over SR 874 Rmps and Csxrr

Good

Miami-Dade County, Florida · At SR 874 Heft Intchg · Structure no. 870921

Built
2019
6 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
519 ft
4 main spans
Daily traffic
95,800
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 821 NB 17.9 over SR 874 Rmps and Csxrr is a prestressed concrete stringer/multi-beam or girder carrying SR 821 NB 17.9 over SR 874 Rmps and Csxrr in Miami-Dade County, Florida. It was built in 2019, so it is 6 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 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 95,800 vehicles a day, roughly 8% of them trucks, projected to reach 166,213 by 2042. The structure is 519 ft (158.1 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 821 NB 17.9
CrossesSR 874 Rmps and Csxrr
LocationAt SR 874 Heft Intchg
RouteState Highway 821
CountyMiami-Dade County
StateFlorida
Coordinates25.64999, -80.38543
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.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Last inspectionApril 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 rating66.6 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length519 ft (158.1 m)
Longest span155 ft (47.1 m)
Deck width75 ft (22.9 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deck24 ft (7.3 m)

Traffic and service

Average daily traffic95,800 (2024)
Projected traffic166,213 by 2042
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 SR 821 NB 17.9 over SR 874 Rmps and Csxrr built?

It was built in 2019, making it 6 years old in 2025.

What condition is SR 821 NB 17.9 over SR 874 Rmps and Csxrr 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 SR 821 NB 17.9 over SR 874 Rmps and Csxrr carry?

About 95,800 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR 821 NB 17.9 over SR 874 Rmps and Csxrr?

The structure is 519 ft (158.1 m) long with a longest span of 155 ft (47.1 m) and a deck 75 ft wide.

Who owns SR 821 NB 17.9 over SR 874 Rmps and Csxrr?

It is owned by the State Toll Authority.