Structure 870928 · Miami-Dade County, FL

SW 24th Street over SR 821 24.675

Carries SW 24th Street over SR 821 24.675, 1 Mile South Of US 41.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT514 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 6/9 · sets the ratingSubstructure 8/9

514 ft end to end, longest span 141 ft: about 7 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built20197 years old
Length514.1 ft156.7 m
Daily traffic33,000counted 2024
Last inspectedApril 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
Location1 Mile South Of US 41
CarriesSW 24th Street
CrossesSR 821 24.675
Coordinates25.74633, -80.38439

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length514.1 ft (156.7 m)
Max Span141.1 ft (43 m)
Deck Width86.9 ft (26.5 m)
Deck Area4152.6 sq m
Main Spans4
Year Built2019

Traffic

Avg Daily Traffic33,000 (2024)
Truck Traffic13%
Lanes On Bridge4
Lanes Under Bridge12

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number870928

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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