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HWY S BOS BYPASS over COMB AMTRAK/MBTA&RED LN

Map

Coordinates:
+42.33389, -71.06250
42°20'02" N, 71°03'45" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:HWY S BOS BYPASS over COMB AMTRAK/MBTA&RED LN
Structure number:B166457GDDOTNBI
Location:.6 MI S OF JCT I 90, I 93
Purpose:Carries highway over railroad
Route classification:Minor Arterial (Urban) [16]
Length of largest span:200.1 ft. [61.0 m]
Total length:1822.6 ft. [555.5 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:34.8 ft. [10.6 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Owner:State Highway Agency [01]
Year built:1995
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:10
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 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:8,530 [as of 2013]
Truck traffic:12% 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:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:33.0 tons [30.0 metric tons]
Inventory rating:19.8 tons [18.0 metric tons]
Sufficiency rating:70.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$34,432,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201570.0GoodGoodGoodGood-8530
September 201370.0GoodGoodGoodGood-8530
September 201169.6GoodGoodGoodGood-11650
February 201169.6GoodGoodGoodGood-11650
March 200926.5GoodGoodGoodGoodFO11650

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.3,6403,640000
Steel Protective Coatingsq. ft.64,42864,428000
Steel Girder/Beamlinear ft.113113000
Steel Protective Coatingsq. ft.1,2151,215000
Deck
Reinforced Concrete Decksq. ft.63,25163,251000
Wearing Surfacessq. ft.57,09957,099000
Substructure
Reinforced Concrete Columneach99000
Reinforced Concrete Pier Walllinear ft.1717000
Reinforced Concrete Abutmentlinear ft.7272000
Reinforced Concrete Pier Caplinear ft.141141000
Joints
Assembly with Sealeach7373000
Bearings
Elastomeric Bearingeach2222000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3,6403,640000