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ST128 over RR MBTA

Map

Coordinates:
+42.62464, -70.66433
42°37'29" N, 70°39'52" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:ST128 over RR MBTA
Structure number:G050232UBDOTNBI
Old structure number:2UB050509052101 (from 1992 edition)
Location:.7 MI N WASHINGTON CIRCLE
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:32.2 ft. [9.8 m]
Total length:35.1 ft. [10.7 m]
Roadway width between curbs:71.9 ft. [21.9 m]
Deck width edge-to-edge:97.4 ft. [29.7 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Skew angle:14°
Owner:State Highway Agency [01]
Year built:1950
Year reconstructed:1999
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:M 18 / H 20 [4]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:23,500 [as of 2017]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
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]
Sufficiency rating:93.7
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$29,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairGoodVery GoodSatisfactory2350093.7
September 2015FairVery GoodVery GoodSatisfactory2350093.7
September 2013FairVery GoodVery GoodSatisfactory2350093.7
September 2011FairVery GoodVery GoodSatisfactory2370093.7
September 2009FairVery GoodVery GoodSatisfactory2370093.7
August 1999GoodExcellentExcellentGood3609090.4
September 1998PoorPoorGoodGood3609080.4
September 1996PoorPoorGoodGood3609078.1
September 1990PoorPoorGoodVery Good2054786.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.475475000
Deck
Reinforced Concrete Decksq. ft.3,2393,239000
Wearing Surfacessq. ft.2,4412,3816000
Concrete Protective Coatingsq. ft.3,2393,239000
Substructure
Reinforced Concrete Abutmentlinear ft.2051555000
Joints
Pourable Jointlinear ft.192019200
Bearings
Elastomeric Bearingeach2828000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.68482000