IS 664 NBL Ramp B over Boat Harbor


+36.97046, -76.41671
36°58'14" N, 76°25'00" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 664 NBL Ramp B over Boat Harbor
Structure number:000000000020756
Location:1.0 Mi Fr MMMBT
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:120.1 ft. [36.6 m]
Total length:808.1 ft. [246.3 m]
Roadway width between curbs:30.5 ft. [9.3 m]
Deck width edge-to-edge:34.1 ft. [10.4 m]
Owner:State Highway Agency [01]
Year built:1990
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:6
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,500 [as of 1996]
Truck traffic:5% 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:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:99.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairGoodSatisfactorySatisfactory150099.7
November 2016FairSatisfactorySatisfactoryGood150099.7
November 2014FairSatisfactorySatisfactoryGood150099.7
November 2012FairSatisfactorySatisfactoryGood150099.7
November 2010FairSatisfactorySatisfactoryGood150099.7
November 2008FairSatisfactorySatisfactoryGood150099.7
November 2006FairSatisfactorySatisfactoryGood150099.7
December 2004FairSatisfactorySatisfactoryGood150099.7
November 2002FairSatisfactorySatisfactoryGood150099.7
December 2000FairSatisfactoryVery GoodGood150097.6
January 1999FairSatisfactoryVery GoodVery Good150097.6
April 1997FairSatisfactoryVery GoodVery Good100097.8
March 1995FairSatisfactoryVery GoodVery Good100097.8
January 1993GoodVery GoodVery GoodVery Good50097.9
January 1991GoodVery GoodVery GoodVery Good50099.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.6,0484,5421,50600
Steel Protective Coatingsq. ft.65,075046,303018,772
Reinforced Concrete Decksq. ft.32,21831,87903390
Wearing Surfacessq. ft.29,55529,555000
Reinforced Concrete Columneach33000
Reinforced Concrete Pier Walllinear ft.119119000
Reinforced Concrete Abutmentlinear ft.99830160
Reinforced Concrete Pier Caplinear ft.29518111130
Strip Seal Jointlinear ft.68058010
Compression Jointlinear ft.9209200
Movable Bearingeach4853670
Steel Protective Coatingsq. ft.4800471
Fixed Bearingeach2802800
Steel Protective Coatingsq. ft.2800280
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.417417000
Steel Protective Coatingsq. ft.2,0851,66841700
Reinforced Concrete Bridge Raillinear ft.1,8371,37804590