I 93 SB BT 61-B5 over RR BMRR


+42.37972, -71.07667
42°22'47" N, 71°04'36" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 SB BT 61-B5 over RR BMRR
Structure number:B162813BVDOTNBI
Old structure number:3BV09383607V101 (from 1992 edition)
Location:0.24 MI S OF CAMBRIDGE ST
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:83.0 ft. [25.3 m]
Total length:486.9 ft. [148.4 m]
Roadway width between curbs:44.6 ft. [13.6 m]
Deck width edge-to-edge:57.1 ft. [17.4 m]
Vertical clearance above deck:14.8 ft. [4.5 m]
Vertical clearance below bridge:39.4 ft. [12.0 m]
Owner:State Highway Agency [01]
Year built:1970
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
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 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:87,100 [as of 2016]
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:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:60.7 tons [55.2 metric tons]
Inventory rating:36.3 tons [33.0 metric tons]
Sufficiency rating:51.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$13,919,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201651.0FairSatisfactorySatisfactoryFairFO87100
July 201452.7FairSatisfactorySatisfactoryFairFO72100
July 201257.6FairSatisfactorySatisfactoryFair-72100
March 201057.6FairSatisfactorySatisfactoryFair-72100
August 199958.7FairSatisfactorySatisfactoryFair-64000
June 199772.5FairSatisfactorySatisfactorySatisfactory-54200
March 199581.4FairSatisfactorySatisfactorySatisfactory-127789

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,4601,3738340
Steel Protective Coatingsq. ft.1,9981,998000
Steel Stringerlinear ft.2,3952,395000
Steel Protective Coatingsq. ft.999999000
Reinforced Concrete Decksq. ft.29,23227,5951,63700
Wearing Surfacessq. ft.27,77126,3821,38900
Steel Floor Beamlinear ft.509509000
Steel Protective Coatingsq. ft.999999000
Steel Columneach1917020
Steel Protective Coatingsq. ft.1,9981,998000
Steel Pier Caplinear ft.558324215190
Steel Protective Coatingsq. ft.1,9981,998000
Open Jointlinear ft.8980900
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.9849354900
Reinforced Concrete Bridge Raillinear ft.98449249200