Structure 870921 · Miami-Dade County, FL

SR 821 NB 17.9 over SR 874 Rmps And Csxrr

Carries SR 821 NB 17.9 over SR 874 Rmps And Csxrr, At SR 874 Heft Intchg.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT519 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 9/9

519 ft end to end, longest span 155 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
Length518.7 ft158.1 m
Daily traffic95,800counted 2024
Last inspectedApril 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
LocationAt SR 874 Heft Intchg
CarriesSR 821 NB 17.9
CrossesSR 874 Rmps And Csxrr
Coordinates25.64999, -80.38543

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length518.7 ft (158.1 m)
Max Span154.5 ft (47.1 m)
Deck Width75.1 ft (22.9 m)
Deck Area3620.5 sq m
Main Spans4
Year Built2019

Traffic

Avg Daily Traffic95,800 (2024)
Truck Traffic8%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number870921

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.

Nearby Bridges