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HWY BOYLSTON ST over COMB I 90 & MBTA/CSX

Map

Coordinates:
+42.34722, -71.08722
42°20'50" N, 71°05'14" 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:14.1 ft. [4.3 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:Bituminous [6]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:16,181 [as of 2016]
Truck traffic:13% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:54.7 tons [49.7 metric tons]
Inventory rating:32.5 tons [29.5 metric tons]
Sufficiency rating:74.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$18,596,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201674.6FairGoodSatisfactoryFairFO16181
August 201470.3FairGoodSatisfactoryFairFO30700
August 201272.1FairGoodSatisfactoryFairFO30700
August 201075.1FairGoodGoodFairFO30700
December 200778.3FairGoodGoodFairFO19900

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.7,00007,00000
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.47,45045,8791,57100
Wearing Surfacessq. ft.40,60040,600000
Substructure
Reinforced Concrete Columneach5404590
Reinforced Concrete Pier Walllinear ft.2000150500
Reinforced Concrete Abutmentlinear ft.470470000
Reinforced Concrete Pier Caplinear ft.1,12076036000
Joints
Compression Jointlinear ft.90045045000
Bearings
Movable Bearingeach121121000
Steel Protective Coatingsq. ft.999999000
Fixed Bearingeach121121000
Steel Protective Coatingsq. ft.999999000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.7207002000