I 93 NB over I 93 SB, AUSTN ST, MBTA


+42.37337, -71.06972
42°22'24" N, 71°04'11" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 NB over I 93 SB, AUSTN ST, MBTA
Structure number:B166008YYDOTNBI
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:148.0 ft. [45.1 m]
Total length:532.5 ft. [162.3 m]
Roadway width between curbs:67.6 ft. [20.6 m]
Deck width edge-to-edge:71.5 ft. [21.8 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:2002
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: September 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:46,984 [as of 2015]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
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 desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:89.6
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$10,288,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018GoodGoodGoodGood4698489.6
September 2016GoodGoodGoodGood4698489.6
September 2014GoodGoodGoodGood4840089.6
September 2012GoodGoodGoodGood4700089.6
March 2010GoodGoodGoodGood4700089.6
January 2008FairGoodGoodSatisfactory17463022.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Closed Web/Box Girderlinear ft.2,1311,81132000
Steel Protective Coatingsq. ft.76,48271,1285,35400
Reinforced Concrete Decksq. ft.43,83743,7706700
Wearing Surfacessq. ft.41,42441,26416000
Steel Columneach22000
Steel Protective Coatingsq. ft.1,6321,632000
Reinforced Concrete Columneach99000
Steel Pier Caplinear ft.5754898600
Steel Protective Coatingsq. ft.39,07334,4254,64800
Strip Seal Jointlinear ft.67234400
Assembly with Sealeach91375400
Pot Bearingeach99000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,0651,062300