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I 495 NB over ST110

Map

Coordinates:
+42.84665, -70.91894
42°50'48" N, 70°55'08" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 495 NB over ST110
Structure number:A070252WGDOTNBI
Location:AT EXIT 55
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:95.1 ft. [29.0 m]
Total length:200.1 ft. [61.0 m]
Roadway width between curbs:38.1 ft. [11.6 m]
Deck width edge-to-edge:44.3 ft. [13.5 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:50°
Owner:State Highway Agency [01]
Year built:1964
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:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: June 2016

Good/Fair/Poor Condition:Poor
Status:Open, would be posted or closed except for temporary shoring [D]
Average daily traffic:28,012 [as of 2016]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:44.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$4,495,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2016PoorSatisfactoryPoorSatisfactory2801244.0
June 2014FairSatisfactorySatisfactorySatisfactory5510070.1
June 2012FairSatisfactorySatisfactorySatisfactory5510070.1
June 2010FairFairSatisfactorySatisfactory5510069.0
June 2008FairSatisfactorySatisfactorySatisfactory5510070.1

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.1,18101,106705
Steel Protective Coatingsq. ft.52,272015,68120,64215,949
Bearings
Movable Bearingeach1800180
Fixed Bearingeach1800180