US Bridges

SR924 Gratigny Pkw over SR 823 NW 57th Avenue

Good

Miami-Dade County, Florida · SR 924 over SR 823 · Structure no. 870721

Built
1990
35 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
68,000
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR924 Gratigny Pkw over SR 823 NW 57th Avenue is a prestressed concrete stringer/multi-beam or girder carrying SR924 Gratigny Pkw over SR 823 NW 57th Avenue in Miami-Dade County, Florida. It was built in 1990, so it is 35 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 68,000 vehicles a day, roughly 8% of them trucks, projected to reach 117,980 by 2042. The structure is 120 ft (36.6 m) long and 129 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR924 Gratigny Pkw
CrossesSR 823 NW 57th Avenue
LocationSR 924 over SR 823
RouteState Highway 924
CountyMiami-Dade County
StateFlorida
Coordinates25.89631, -80.29186
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.4 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span120 ft (36.6 m)
Deck width129 ft (39.4 m)
Roadway width125 ft (38.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,000 (2024)
Projected traffic117,980 by 2042
Trucks8%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 SR924 Gratigny Pkw over SR 823 NW 57th Avenue built?

It was built in 1990, making it 35 years old in 2025.

What condition is SR924 Gratigny Pkw over SR 823 NW 57th 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 November 2024.

How much traffic does SR924 Gratigny Pkw over SR 823 NW 57th Avenue carry?

About 68,000 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR924 Gratigny Pkw over SR 823 NW 57th Avenue?

The structure is 120 ft (36.6 m) long with a longest span of 120 ft (36.6 m) and a deck 129 ft wide.

Who owns SR924 Gratigny Pkw over SR 823 NW 57th Avenue?

It is owned by the State Toll Authority.