I 93 NB over I 93 SB BT 46 - 57


+42.37717, -71.07500
42°22'38" N, 71°04'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 NB over I 93 SB BT 46 - 57
Structure number:B162813BMDOTNBI
Location:.5 MI N OF JCT I93&US1
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:82.0 ft. [25.0 m]
Total length:898.0 ft. [273.7 m]
Roadway width between curbs:62.0 ft. [18.9 m]
Deck width edge-to-edge:68.9 ft. [21.0 m]
Vertical clearance above deck:15.7 ft. [4.8 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1970
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:11
Main spans material:Steel [3]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:67,375 [as of 2017]
Truck traffic:8% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:76.0
Recommended work:Bridge deck rehabilitation with only incidental widening. [36]
Estimated cost of work:$13,969,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairFairSatisfactorySatisfactory6737576.0
April 2016FairFairSatisfactorySatisfactory5890076.0
April 2014FairFairSatisfactorySatisfactory7420076.0
April 2012FairSatisfactorySatisfactorySatisfactory7420077.0
April 2010FairSatisfactorySatisfactorySatisfactory9640077.0
March 2008FairSatisfactorySatisfactorySatisfactory9640077.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,7601,62513500
Steel Protective Coatingsq. ft.32,28020,6308,3503,3000
Steel Stringerlinear ft.7,6857,29539000
Steel Protective Coatingsq. ft.60,19057,1653,02500
Reinforced Concrete Decksq. ft.62,01058,2703,1106246
Wearing Surfacessq. ft.56,00055,89810200
Steel Floor Beamlinear ft.1,8401,65518500
Steel Protective Coatingsq. ft.35,60017,80012,4605,3400
Steel Columneach3030000
Steel Protective Coatingsq. ft.8,8137,87394000
Steel Pier Caplinear ft.1,255954282190
Steel Protective Coatingsq. ft.24,35013,2507,8003,3000
Compression Jointlinear ft.6969000
Open Jointlinear ft.207020160
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,8001,75003020
Reinforced Concrete Bridge Raillinear ft.1,8001,62018000