Structure 870905 · Miami-Dade County, FL

Sr821 Nbheft 26.99 over Sr836 NW 12st Canal Rr

Carries Sr821 Nbheft 26.99 over Sr836 NW 12st Canal Rr, 0.5 Mi North Of SR 836.

Overall conditionGood

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

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT419 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

419 ft end to end, longest span 99 ft: about 6 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.

Built2002rebuilt 2023
Length418.6 ft127.6 m
Daily traffic42,750counted 2024
Last inspectedApril 2024every 24 months

Location

StateFlorida
CountyMiami-Dade
Location0.5 Mi North Of SR 836
CarriesSr821 Nbheft 26.99
CrossesSr836 NW 12st Canal Rr
Coordinates25.78220, -80.38578

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length418.6 ft (127.6 m)
Max Span99.4 ft (30.3 m)
Deck Width90.9 ft (27.7 m)
Deck Area3534.5 sq m
Main Spans5
Year Built2002 (reconstructed 2023)

Traffic

Avg Daily Traffic42,750 (2024)
Truck Traffic10%
Lanes On Bridge5
Lanes Under Bridge11

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number870905

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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