I 93 SB B5-B10 over RR MBTA/BMRR


+42.38139, -71.07694
42°22'53" N, 71°04'37" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 SB B5-B10 over RR MBTA/BMRR
Structure number:B162813EDDOTNBI
Location:.9 MI N OF JCT I93&US1
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:139.1 ft. [42.4 m]
Total length:549.9 ft. [167.6 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:16.4 ft. [5.0 m]
Vertical clearance below bridge:35.1 ft. [10.7 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:5
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 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:47,940 [as of 2015]
Truck traffic:9% 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:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:52.7 tons [47.9 metric tons]
Inventory rating:31.6 tons [28.7 metric tons]
Sufficiency rating:72.9
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$16,457,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201572.9FairSatisfactorySatisfactoryFairFO47940
July 201372.9FairSatisfactorySatisfactoryFairFO47940
March 201170.3FairSatisfactorySatisfactoryFairFO68700
April 200870.3FairSatisfactorySatisfactoryFairFO68700

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.2,7532,63060630
Steel Protective Coatingsq. ft.50,92450,34905750
Steel Stringerlinear ft.1,5931,593000
Steel Protective Coatingsq. ft.11,12311,123000
Reinforced Concrete Decksq. ft.30,94730,82712000
Wearing Surfacessq. ft.27,14625,6461,50000
Steel Floor Beamlinear ft.301301000
Steel Protective Coatingsq. ft.4,0664,066000
Steel Columneach1613030
Steel Protective Coatingsq. ft.27,99127,87101200
Steel Pier Caplinear ft.5111831002280
Steel Protective Coatingsq. ft.14,81812,19302,6250
Open Jointlinear ft.1501000500
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,0861,0710150