I 93 NB over I 93 SB


+42.37231, -71.06780
42°22'20" N, 71°04'04" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 NB over I 93 SB
Structure number:B16600900DOTNBI
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:143.1 ft. [43.6 m]
Total length:546.9 ft. [166.7 m]
Roadway width between curbs:49.9 ft. [15.2 m]
Deck width edge-to-edge:54.1 ft. [16.5 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:2003
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:Prestressed concrete continuous [6]
Main spans design:Segmental box girder [21]
Deck type:Other [9]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: January 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:78,500 [as of 2012]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 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 desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:63.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$14,273,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2018FairGoodGoodFair7850063.0
January 2016FairGoodGoodSatisfactory7850074.0
January 2014FairGoodGoodSatisfactory7850074.0
January 2012FairGoodGoodSatisfactory7850074.0
January 2010GoodGoodGoodGood5868974.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Closed Web/Box Girderlinear ft.1,0941,0523930
Prestressed Concrete Girder/Beamlinear ft.44734310310
Prestressed Concrete Top Flangesq. ft.29,53427,8631,66740
Wearing Surfacessq. ft.27,35027,125205200
Reinforced Concrete Columneach96300
Reinforced Concrete Pier Caplinear ft.378255108150
Assembly with Sealeach102426000
Elastomeric Bearingeach54100
Movable Bearingeach42020
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,0681,0185000