WB NW 21st Street over MIA & MIC Ramps


+25.79472, -80.26278
25°47'41" N, 80°15'46" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:WB NW 21st Street over MIA & MIC Ramps
Structure number:874647
Location:MIA Intchg E of LeJeuneRd
Purpose:Carries highway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:129.6 ft. [39.5 m]
Total length:227.4 ft. [69.3 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:44.9 ft. [13.7 m]
Vertical clearance below bridge:20.0 ft. [6.1 m]
Skew angle:24°
Owner:County Highway Agency [02]
Year built:2008
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2016 

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:11,567 [as of 2016]
Truck traffic:5% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Superior to present desirable criteria [9]
Scour condition:Bridge not over waterway. [N]
Operating rating:68.3 tons [62.1 metric tons]
Inventory rating:40.9 tons [37.2 metric tons]
Sufficiency rating:90.4

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201690.4GoodVery GoodVery GoodVery Good-11567
May 201490.4GoodVery GoodVery GoodVery Good-11567
May 201291.4GoodVery GoodVery GoodVery Good-11567
May 201092.4GoodVery GoodVery GoodVery Good-11567
May 200892.4GoodExcellentExcellentExcellent-11567