Structure 871034 · Miami-Dade County, FL

WB SR 990 Off Ramp over Csx Railroad

Carries WB SR 990 Off Ramp over Csx Railroad, Ramp To SW 107th Avenue.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructure9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT121 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 8/9 · sets the ratingSubstructure 9/9

121 ft end to end, longest span 73 ft. 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.

Built201115 years old
Length121.4 ft37 m
Daily traffic4,800counted 2024
Last inspectedAugust 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
LocationRamp To SW 107th Avenue
CarriesWB SR 990 Off Ramp
CrossesCsx Railroad
Coordinates25.67222, -80.36575

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length121.4 ft (37 m)
Max Span73.2 ft (22.3 m)
Deck Width56.4 ft (17.2 m)
Deck Area636.4 sq m
Main Spans2
Year Built2011

Traffic

Avg Daily Traffic4,800 (2024)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number871034

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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