I-81 ON & OFF RAMP over I-81


+38.40249, -78.90763
38°24'09" N, 78°54'27" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-81 ON & OFF RAMP over I-81
Structure number:000000000020456
Location:0.44 TO 81- 0.23 TO 11
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:82.0 ft. [25.0 m]
Total length:306.1 ft. [93.3 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:61.0 ft. [18.6 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:43°
Owner:State Highway Agency [01]
Year built:1966
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:4
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:4,311 [as of 2014]
Deck condition:Satisfactory [6 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]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:87.5
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$117,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairSatisfactorySatisfactorySatisfactory431187.5
August 2015FairGoodSatisfactoryGood431187.5
August 2013FairGoodSatisfactoryFair4588165.0
August 2011FairGoodSatisfactoryFair4588165.0
August 2009FairGoodSatisfactoryFair4588165.0
September 2007FairGoodSatisfactoryFair4836465.0
September 2005FairSatisfactoryFairFair4798465.0
September 2003FairSatisfactorySatisfactoryFair4710565.0
October 2001FairSatisfactorySatisfactorySatisfactory4337776.0
September 1999GoodGoodGoodGood450091.0
October 1997GoodGoodGoodGood450091.0
October 1995FairSatisfactoryGoodSatisfactory32891.0
August 1993FairSatisfactoryGoodFair32880.0
April 1991FairSatisfactoryGoodFair32881.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.3,0613,0220390
Steel Protective Coatingsq. ft.26,92626,926000
Reinforced Concrete Decksq. ft.18,67817,71296600
Wearing Surfacessq. ft.12,85312,8430010
Reinforced Concrete Columneach1801800
Reinforced Concrete Abutmentlinear ft.1861394070
Reinforced Concrete Pier Caplinear ft.246024510
Compression Jointlinear ft.42525017500
Movable Bearingeach40030100
Steel Protective Coatingsq. ft.160800800
Fixed Bearingeach4004000
Steel Protective Coatingsq. ft.160800800
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.612611100
Reinforced Concrete Bridge Raillinear ft.612612000