Structure 870915 · Miami-Dade County, FL

I-75 Rmp (sb) 39.2 over I-75 Sb/turnpike Heft SB

Carries I-75 Rmp (sb) 39.2 over I-75 Sb/turnpike Heft SB, I-75 Exprs To Tpk Heft.

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 FT2,015 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

2,015 ft end to end, longest span 250 ft: about 5.6 football fields. 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 box-beam bridge.

Built20179 years old
Length2015.1 ft614.2 m
Daily traffic5,100counted 2023
Last inspectedDecember 2023every 24 months

Location

StateFlorida
CountyMiami-Dade
LocationI-75 Exprs To Tpk Heft
CarriesI-75 Rmp (sb) 39.2
CrossesI-75 Sb/turnpike Heft SB
Coordinates25.95013, -80.35174

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Multiple
Total Length2015.1 ft (614.2 m)
Max Span250.0 ft (76.2 m)
Deck Width29.9 ft (9.1 m)
Deck Area5589.2 sq m
Main Spans9
Year Built2017

Traffic

Avg Daily Traffic5,100 (2023)
Truck Traffic6%
Lanes On Bridge1
Lanes Under Bridge14

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number870915

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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