I 495 SB over ST114 WINTHROP AVE


+42.68632, -71.14292
42°41'11" N, 71°08'35" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 495 SB over ST114 WINTHROP AVE
Structure number:L040412X3DOTNBI
Location:.7 MI N ST28
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:51.8 ft. [15.8 m]
Total length:168.0 ft. [51.2 m]
Roadway width between curbs:51.8 ft. [15.8 m]
Deck width edge-to-edge:60.0 ft. [18.3 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:16°
Owner:State Highway Agency [01]
Year built:1962
Year reconstructed:1989
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
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: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:94,800 [as of 2013]
Truck traffic:12% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:53.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$5,110,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2017FairFairSatisfactoryFair9480053.1
January 2015FairFairGoodFair9480053.1
January 2013FairFairGoodFair9480053.1
January 2011FairFairGoodFair8200053.8
January 2009FairSatisfactoryGoodSatisfactory8100067.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,3191,08923000
Steel Protective Coatingsq. ft.9,77407,2241,700850
Reinforced Concrete Decksq. ft.10,1089,839251180
Wearing Surfacessq. ft.9,5761,4765,2552,730115
Reinforced Concrete Columneach123450
Reinforced Concrete Abutmentlinear ft.1261041435
Reinforced Concrete Pier Caplinear ft.1835940840
Other Jointlinear ft.1884614002
Movable Bearingeach32122000
Steel Protective Coatingsq. ft.640321616
Fixed Bearingeach32122000
Steel Protective Coatingsq. ft.640321616
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3362810550