I 495 NB over I 95 NB


+42.02658, -71.25659
42°01'36" N, 71°15'24" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 495 NB over I 95 NB
Structure number:M030273RJDOTNBI
Location:I 495 AT I 95
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:108.9 ft. [33.2 m]
Total length:113.9 ft. [34.7 m]
Roadway width between curbs:51.8 ft. [15.8 m]
Deck width edge-to-edge:58.1 ft. [17.7 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:15°
Owner:State Highway Agency [01]
Year built:1965
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:50,000 [as of 2016]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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:69.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,134,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairGoodSatisfactorySatisfactory5000069.8
November 2016FairGoodSatisfactorySatisfactory4810671.8
November 2014FairGoodSatisfactorySatisfactory4200071.8
November 2012FairGoodSatisfactorySatisfactory4200071.8
November 2010FairGoodSatisfactorySatisfactory4200071.8
November 2008FairGoodSatisfactorySatisfactory4200071.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.797797000
Steel Protective Coatingsq. ft.11,85011,7650850
Reinforced Concrete Decksq. ft.5,8295,47535400
Wearing Surfacessq. ft.5,7415,741000
Reinforced Concrete Abutmentlinear ft.122843800
Other Jointlinear ft.6060000
Movable Bearingeach70700
Steel Protective Coatingsq. ft.3628800
Fixed Bearingeach77000
Steel Protective Coatingsq. ft.3930900
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.308308000