I 93 SB B10-B16 over RR MBTA/BMRR


+42.38222, -71.07694
42°22'56" N, 71°04'37" 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:35.1 ft. [10.7 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 2015 

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: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]
Operating rating:55.4 tons [50.4 metric tons]
Inventory rating:33.2 tons [30.2 metric tons]
Sufficiency rating:77.5
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$13,225,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201577.5Not deficientSatisfactoryFairFair47940
July 201375.3Not deficientSatisfactoryFairFair47940
March 201172.9Not deficientSatisfactoryFairFair68700
June 200872.9Not deficientSatisfactoryFairFair68700