Structure 870557 · Miami-Dade County, FL

SR 878 over SR 973 (sw 87th Avenue)

Carries SR 878 over SR 973 (sw 87th Avenue), 2 Miles West Of US 1.

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
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT182 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

182 ft end to end, longest span 102 ft: about 3 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.

Built197848 years old
Length181.8 ft55.4 m
Daily traffic53,341counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
Location2 Miles West Of US 1
CarriesSR 878
CrossesSR 973 (sw 87th Avenue)
Coordinates25.69568, -80.33380

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length181.8 ft (55.4 m)
Max Span101.7 ft (31 m)
Deck Width95.1 ft (29 m)
Deck Area1606.6 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic53,341 (2024)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number870557

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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