US Bridges

SR 924 (gratigny) over W 8th Avenue

Good

Miami-Dade County, Florida · 0.5 Miles West of SR 823 · Structure no. 870720

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

About this bridge

SR 924 (gratigny) over W 8th Avenue is a prestressed concrete stringer/multi-beam or girder carrying SR 924 (gratigny) over W 8th 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 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 68,000 vehicles a day, roughly 8% of them trucks, projected to reach 117,980 by 2042. The structure is 86 ft (26.2 m) long and 141 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 924 (gratigny)
CrossesW 8th Avenue
Location0.5 Miles West of SR 823
RouteState Highway 924
CountyMiami-Dade County
StateFlorida
Coordinates25.89708, -80.30011
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 inspectionNovember 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 alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span86 ft (26.2 m)
Deck width141 ft (43 m)
Roadway width135 ft (41.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,000 (2024)
Projected traffic117,980 by 2042
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 924 (gratigny) over W 8th Avenue built?

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

What condition is SR 924 (gratigny) over W 8th 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 SR 924 (gratigny) over W 8th Avenue carry?

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

How long is SR 924 (gratigny) over W 8th Avenue?

The structure is 86 ft (26.2 m) long with a longest span of 86 ft (26.2 m) and a deck 141 ft wide.

Who owns SR 924 (gratigny) over W 8th Avenue?

It is owned by the State Toll Authority.