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HWY BLUE HILL AV over RR MBTA

Map

Coordinates:
+42.27305, -71.09360
42°16'23" N, 71°05'37" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:HWY BLUE HILL AV over RR MBTA
Structure number:B161653H3DOT634
Old structure number:3H3900896165101 (from 1992 edition)
Location:1.2 KM N JCTSR28&SR138
Purpose:Carries highway and pedestrian walkway over railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:78.4 ft. [23.9 m]
Total length:143.1 ft. [43.6 m]
Roadway width between curbs:84.0 ft. [25.6 m]
Deck width edge-to-edge:120.1 ft. [36.6 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:49°
Owner:State Highway Agency [01]
Year built:1902
Year reconstructed:1973
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:2
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: February 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:22,300 [as of 2016]
Truck traffic:4% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 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:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:59.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$13,729,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2018PoorFairPoorPoor2230059.0
February 2016PoorFairSatisfactoryPoor2230059.0
February 2014PoorFairSatisfactoryPoor4380055.4
February 2012FairFairSatisfactoryFair4380073.2
February 2010FairFairSatisfactoryFair4200073.5
January 2000FairFairSatisfactoryFair3880069.2
January 1998FairFairSatisfactoryFair3400072.8
January 1996FairSatisfactorySatisfactorySatisfactory910082.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.2,1731,01301,13525
Steel Protective Coatingsq. ft.20,41228218,3343001,496
Deck
Reinforced Concrete Decksq. ft.17,17730315,9649100
Wearing Surfacessq. ft.12,0143,4948,52000
Substructure
Reinforced Concrete Columneach105050
Reinforced Concrete Abutmentlinear ft.358180924838
Other Material Abutmentlinear ft.3583332500
Reinforced Concrete Pier Caplinear ft.17711308650
Joints
Pourable Jointlinear ft.256002560
Bearings
Movable Bearingeach3204280
Steel Protective Coatingsq. ft.96012840
Fixed Bearingeach3202840
Steel Protective Coatingsq. ft.1280016112
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.413440900
Steel Protective Coatingsq. ft.1,6500001,650