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I 495 NB over HWY DONALD LYNCH BLVD

Map

Coordinates:
+42.36711, -71.59358
42°22'02" N, 71°35'37" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 495 NB over HWY DONALD LYNCH BLVD
Structure number:M06007281DOTNBI
Location:.1 MI N OF I-290
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:66.6 ft. [20.3 m]
Total length:138.5 ft. [42.2 m]
Roadway width between curbs:49.9 ft. [15.2 m]
Deck width edge-to-edge:56.1 ft. [17.1 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:37°
Owner:State Highway Agency [01]
Year built:1963
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:43,828 [as of 2016]
Truck traffic:15% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 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: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:60.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,949,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017PoorPoorFairSatisfactory4382860.1
March 2015FairSatisfactorySatisfactoryGood5000073.6
March 2013FairSatisfactorySatisfactoryGood5000073.6
March 2011FairSatisfactorySatisfactoryFair5000062.6
March 2009FairSatisfactorySatisfactoryFair9800056.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.1,3391,2984010
Deck
Reinforced Concrete Decksq. ft.7,7677,767000
Wearing Surfacessq. ft.6,9006,1007001000
Substructure
Reinforced Concrete Columneach88000
Reinforced Concrete Abutmentlinear ft.166164020
Reinforced Concrete Pier Caplinear ft.1461340120
Bearings
Movable Bearingeach3003000
Steel Protective Coatingsq. ft.6000060
Fixed Bearingeach30201000
Steel Protective Coatingsq. ft.60040020
Bridge Rail
Other Material Bridge Raillinear ft.3182863002