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I 93 SB BT 57-61 over RR MBTA & BMRR

Map

Coordinates:
+42.37917, -71.07639
42°22'45" N, 71°04'35" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 SB BT 57-61 over RR MBTA & BMRR
Structure number:B162813BUDOTNBI
Location:.5 MI N OF JCT 193&US1
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:83.0 ft. [25.3 m]
Total length:335.0 ft. [102.1 m]
Roadway width between curbs:44.3 ft. [13.5 m]
Deck width edge-to-edge:89.6 ft. [27.3 m]
Vertical clearance above deck:16.4 ft. [5.0 m]
Vertical clearance below bridge:19.0 ft. [5.8 m]
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:4
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: November 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:68,700 [as of 2005]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:62.0 tons [56.4 metric tons]
Inventory rating:37.2 tons [33.8 metric tons]
Sufficiency rating:55.7
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$15,097,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201655.7FairSatisfactorySatisfactoryFairFO68700
November 201455.7FairSatisfactorySatisfactoryFairFO68700
November 201255.7FairSatisfactorySatisfactoryFairFO68700
March 201255.7FairSatisfactorySatisfactoryFairFO68700
March 201055.7FairSatisfactorySatisfactoryFairFO68700
February 201055.7FairSatisfactorySatisfactoryFairFO68700

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.1,7821,578168360
Steel Protective Coatingsq. ft.1,9981,998000
Steel Stringerlinear ft.2,5432,5180250
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.33,16631,5081,65800
Wearing Surfacessq. ft.33,16431,5061,65800
Superstructure
Steel Floor Beamlinear ft.525525000
Steel Protective Coatingsq. ft.999999000
Substructure
Steel Columneach139400
Steel Protective Coatingsq. ft.1,9981,998000
Steel Pier Caplinear ft.627321275310
Steel Protective Coatingsq. ft.1,9981,998000
Joints
Open Jointlinear ft.184184000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.6826270055