Structure 870575 · Miami-Dade County, FL

I-395 WB (870373) over NW 3rd Av To Us-1 (sr 5)

Carries I-395 WB (870373) over NW 3rd Av To Us-1 (sr 5), E Of Midtwn Intrchg.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,959 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

3,959 ft end to end, longest span 165 ft: about 11 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 multi-beam bridge.

Built197056 years old
Length3959.0 ft1206.7 m
Daily traffic71,500counted 2024
Last inspectedOctober 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
LocationE Of Midtwn Intrchg
CarriesI-395 WB (870373)
CrossesNW 3rd Av To Us-1 (sr 5)
Coordinates25.78624, -80.19421

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length3959.0 ft (1206.7 m)
Max Span165.0 ft (50.3 m)
Deck Width41.3 ft (12.6 m)
Deck Area15204.4 sq m
Main Spans7
Year Built1970

Traffic

Avg Daily Traffic71,500 (2024)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge33

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number870575

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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