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HWY BOYLSTON ST over COMB I 90 & MBTA/CSX

Map

Coordinates:
+42.34756, -71.08669
42°20'51" N, 71°05'12" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:HWY BOYLSTON ST over COMB I 90 & MBTA/CSX
Structure number:B160504T6DOTNBI
Location:AT PRU CENTER S55
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:173.9 ft. [53.0 m]
Total length:450.2 ft. [137.2 m]
Roadway width between curbs:60.0 ft. [18.3 m]
Deck width edge-to-edge:82.4 ft. [25.1 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:70°
Owner:State Highway Agency [01]
Year built:1965
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:9,100 [as of 2018]
Truck traffic:10% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:59.9
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$28,451,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018PoorSatisfactorySatisfactoryPoor910059.9
August 2016FairGoodSatisfactoryFair1618174.6
August 2014FairGoodSatisfactoryFair3070070.3
August 2012FairGoodSatisfactoryFair3070072.1
August 2010FairGoodGoodFair3070075.1
December 2007FairGoodGoodFair1990078.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.7,0003,0073,6683250
Steel Protective Coatingsq. ft.57,28716,43617,23713,8879,727
Deck
Reinforced Concrete Decksq. ft.47,44946,4998001500
Wearing Surfacessq. ft.40,60038,8601,680600
Substructure
Reinforced Concrete Columneach54410130
Reinforced Concrete Pier Walllinear ft.30026199705
Reinforced Concrete Abutmentlinear ft.44337350200
Reinforced Concrete Pier Caplinear ft.1,110385300311114
Joints
Compression Jointlinear ft.90077001300
Bearings
Movable Bearingeach150856500
Steel Protective Coatingsq. ft.1,137227171398341
Fixed Bearingeach1501104000
Steel Protective Coatingsq. ft.710177142213178
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.720719010