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US 20 COMM AV,MBTA over COMB I 90 & MBTA/CSX

Map

Coordinates:
+42.35056, -71.11194
42°21'02" N, 71°06'43" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 COMM AV,MBTA over COMB I 90 & MBTA/CSX
Structure number:B160554T0DOTNBI
Location:.1MI.S.STORROW DR S48
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:151.9 ft. [46.3 m]
Total length:379.9 ft. [115.8 m]
Roadway width between curbs:60.0 ft. [18.3 m]
Deck width edge-to-edge:72.5 ft. [22.1 m]
Vertical clearance below bridge:14.1 ft. [4.3 m]
Skew angle:62°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1987
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: June 2015

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:81,500 [as of 2015]
Truck traffic:8% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Fair [5 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:Basically intolerable requiring high priority of replacement [2]
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:47.9 tons [43.5 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:47.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$14,434,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201547.0PoorPoorFairPoorSD81500
June 201347.0PoorPoorFairPoorSD35200
June 201249.0PoorFairFairPoorSD35200
April 201050.8PoorFairFairPoorSD20300
January 200850.9PoorFairFairPoorSD19900

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.10,42909,9944350
Steel Protective Coatingsq. ft.1,9981,998000
Steel Stringerlinear ft.971096380
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.72,88036,94511,55224,3830
Wearing Surfacessq. ft.65,90030,31411,20324,3830
Substructure
Reinforced Concrete Pier Walllinear ft.719007190
Masonry Abutmentlinear ft.880008800
Reinforced Concrete Pier Caplinear ft.719007190
Joints
Strip Seal Jointlinear ft.345345000
Compression Jointlinear ft.48001600320
Open Jointlinear ft.372037200
Other Jointlinear ft.400040000
Bearings
Movable Bearingeach108010800
Steel Protective Coatingsq. ft.999999000
Fixed Bearingeach9709700
Steel Protective Coatingsq. ft.999999000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.660066000
Steel Protective Coatingsq. ft.999999000