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I 93 RAMP NS over RR MBTA

Map

Coordinates:
+42.38000, -71.07722
42°22'48" N, 71°04'38" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 RAMP NS over RR MBTA
Structure number:B166049DFDOTNBI
Location:I93/US1 INTERCHANGE
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:157.2 ft. [47.9 m]
Total length:900.6 ft. [274.5 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:40.0 ft. [12.2 m]
Vertical clearance below bridge:39.7 ft. [12.1 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 18 / HS 20 [5]
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: February 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:31,000 [as of 2014]
Truck traffic:2% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:91.6 tons [83.3 metric tons]
Inventory rating:54.9 tons [49.9 metric tons]
Sufficiency rating:89.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$356,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
February 201689.3FairGoodGoodSatisfactory-31000
February 201489.3FairGoodGoodSatisfactory-31000
February 201286.7GoodGoodGoodGood-40300
February 201098.0GoodGoodGoodGood--
December 200798.0GoodGoodGoodGood--

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.1,8001,800000
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.36,01736,017000
Wearing Surfacessq. ft.36,01736,017000
Substructure
Reinforced Concrete Columneach88000
Reinforced Concrete Pier Caplinear ft.2156515000
Joints
Assembly with Sealeach7272000
Bearings
Fixed Bearingeach44000
Steel Protective Coatingsq. ft.999999000
Pot Bearingeach109100
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,8001,800000
Reinforced Concrete Bridge Raillinear ft.1,8001,26054000