I 93 RAMP S-N over RR MBTA


+42.36729, -71.06291
42°22'02" N, 71°03'46" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 RAMP S-N over RR MBTA
Structure number:B166076JNDOTNBI
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:154.2 ft. [47.0 m]
Total length:666.0 ft. [203.0 m]
Roadway width between curbs:29.5 ft. [9.0 m]
Deck width edge-to-edge:36.1 ft. [11.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:1999
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:5
Main spans material:Steel continuous [4]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: July 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:38,224 [as of 2016]
Truck traffic:5% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
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:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:64.0
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$5,201,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018GoodGoodGoodGood3822464.0
July 2016GoodGoodGoodGood3822464.0
July 2014GoodGoodGoodGood6180064.0
July 2012GoodGoodGoodGood6180064.0
March 2010GoodGoodGoodGood6180064.0
March 2008GoodGoodVery GoodGood4122264.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Closed Web/Box Girderlinear ft.1,3321,3023000
Steel Protective Coatingsq. ft.10,20010,200000
Reinforced Concrete Decksq. ft.28,53428,534000
Wearing Surfacessq. ft.28,53428,5142000
Reinforced Concrete Columneach87100
Reinforced Concrete Pier Caplinear ft.1441291500
Assembly with Sealeach7607600
Fixed Bearingeach44000
Pot Bearingeach88000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,3321,2577500