I 93 SB BT 46-57 over TR ORANGE LINE


+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 SB BT 46-57 over TR ORANGE LINE
Structure number:B162813BTDOTNBI
Location:.5 MI N OF JCT I93&US1
Purpose:Carries highway over railroad
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:57.7 ft. [17.6 m]
Deck width edge-to-edge:69.9 ft. [21.3 m]
Vertical clearance above deck:16.4 ft. [5.0 m]
Vertical clearance below bridge:29.5 ft. [9.0 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+Mod / HS 20+Mod [6]
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: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:87,100 [as of 2016]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:76.5
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$29,567,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairSatisfactoryFairFair8710076.5
November 2016FairSatisfactoryFairFair7210078.1
November 2014FairSatisfactoryFairFair7210078.1
November 2012FairSatisfactoryFairFair7210078.1
May 2010FairSatisfactorySatisfactoryFair6870078.5
April 2008FairSatisfactorySatisfactoryFair6870078.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,7951,562155780
Steel Protective Coatingsq. ft.34,51034,1911601590
Steel Stringerlinear ft.7,7557,7450100
Steel Protective Coatingsq. ft.52,75052,6800700
Reinforced Concrete Decksq. ft.71,04371,036520
Wearing Surfacessq. ft.64,76164,625351010
Steel Floor Beamlinear ft.1,6121,610200
Steel Protective Coatingsq. ft.36,00035,993700
Steel Columneach3025050
Steel Protective Coatingsq. ft.12,40012,25001500
Steel Pier Caplinear ft.1,194665814480
Steel Protective Coatingsq. ft.14,90013,6505367131
Assembly without Seal Jointlinear ft.33225850240
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,7951,7718160
Steel Protective Coatingsq. ft.3,7663,766000
Reinforced Concrete Bridge Raillinear ft.1,7951,73154100