I 93 SB B10-B16 over RR MBTA/BMRR


+42.38236, -71.07661
42°22'56" N, 71°04'36" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 SB B10-B16 over RR MBTA/BMRR
Structure number:B162813EEDOTNBI
Location:1 MI N OF JCT I93&US1
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:76.1 ft. [23.2 m]
Total length:442.0 ft. [134.7 m]
Roadway width between curbs:44.9 ft. [13.7 m]
Deck width edge-to-edge:57.1 ft. [17.4 m]
Vertical clearance above deck:17.1 ft. [5.2 m]
Vertical clearance below bridge:32.8 ft. [10.0 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:1970
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:6
Main spans material:Steel [3]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:87,100 [as of 2017]
Truck traffic:9% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:73.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$12,169,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairSatisfactoryFairFair8710073.0
July 2015FairSatisfactoryFairFair4794077.5
July 2013FairSatisfactoryFairFair4794075.3
March 2011FairSatisfactoryFairFair6870072.9
June 2008FairSatisfactoryFairFair6870072.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,7981,611142450
Steel Protective Coatingsq. ft.26,02223,7721,1601,0900
Steel Stringerlinear ft.1,7711,771000
Steel Protective Coatingsq. ft.12,32412,324000
Reinforced Concrete Decksq. ft.25,92025,86824280
Wearing Surfacessq. ft.22,73722,63710000
Steel Floor Beamlinear ft.4023920100
Steel Protective Coatingsq. ft.5,0204,89512500
Steel Columneach1814040
Steel Protective Coatingsq. ft.37,40637,3580480
Steel Pier Caplinear ft.587367135850
Steel Protective Coatingsq. ft.15,6429,5424,3271,305468
Open Jointlinear ft.150149100
Bridge Rail
Other Material Bridge Raillinear ft.8838551270