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I 93 RAMP SN over COMB MBTA & ORANGE LINE

Map

Coordinates:
+42.38028, -71.07722
42°22'49" N, 71°04'38" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 RAMP SN over COMB MBTA & ORANGE LINE
Structure number:B166059TTDOTNBI
Location:I93 US1 INTERCHANGE
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:152.9 ft. [46.6 m]
Total length:862.9 ft. [263.0 m]
Roadway width between curbs:22.0 ft. [6.7 m]
Deck width edge-to-edge:25.9 ft. [7.9 m]
Vertical clearance below bridge:38.4 ft. [11.7 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:1999
Historic significance:Historical significance is not determinable at this time [4]
Number of main spans:6
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: September 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:11,575 [as of 2016]
Truck traffic:4% 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:Equal to present minimum criteria [6]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:65.7 tons [59.7 metric tons]
Inventory rating:39.3 tons [35.7 metric tons]
Sufficiency rating:92.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$4,084,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201692.3GoodGoodGoodGoodFO11575
September 201492.5GoodGoodGoodGoodFO10000
September 201292.5GoodGoodGoodGoodFO10000
March 201094.0GoodGoodGoodGoodFO-
December 200794.0GoodGoodGoodGoodFO-

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.8637768700
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.18,98617,8471,13900
Wearing Surfacessq. ft.18,98617,8471,13900
Substructure
Reinforced Concrete Columneach88000
Reinforced Concrete Pier Caplinear ft.7070000
Joints
Assembly with Sealeach4444000
Bearings
Movable Bearingeach107300
Steel Protective Coatingsq. ft.1,9981,998000
Fixed Bearingeach43100
Steel Protective Coatingsq. ft.999999000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,7261,55217400
Reinforced Concrete Bridge Raillinear ft.1,7261,55217400