I-81 NBL over SR-107


+36.79436, -81.68073
36°47'40" N, 81°40'51" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-81 NBL over SR-107
Structure number:000000000017430
Location:AT EXIT 35 OF I-81
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:47.9 ft. [14.6 m]
Total length:137.1 ft. [41.8 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:44.0 ft. [13.4 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:26°
Owner:State Highway Agency [01]
Year built:1963
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:Latex Concrete or similar additive [3]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:15,061 [as of 2014]
Truck traffic:20% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 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:Equal to present desirable criteria [8]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:81.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairFairFairFair1506181.0
May 2015FairFairFairSatisfactory1506181.0
May 2013FairFairFairSatisfactory1378581.0
May 2011FairFairFairSatisfactory1378581.0
May 2009FairGoodFairSatisfactory1378582.0
May 2007FairFairSatisfactorySatisfactory1590193.0
May 2005FairFairSatisfactorySatisfactory1596793.0
April 2003FairFairSatisfactoryFair1534783.0
May 2002FairFairSatisfactoryFair1500684.0
May 2001PoorPoorSatisfactoryFair1422482.0
July 2000PoorPoorSatisfactoryFair1388782.0
May 1999PoorPoorSatisfactoryFair1388782.0
June 1997FairFairSatisfactoryFair1350079.0
May 1995FairSatisfactoryGoodSatisfactory1450091.0
April 1993GoodGoodVery GoodGood1245087.9
March 1991GoodGoodVery GoodGood981287.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.80806919126
Steel Protective Coatingsq. ft.5,988005,121867
Reinforced Concrete Decksq. ft.6,0284,9549681060
Wearing Surfacessq. ft.5,7545,21453550
Reinforced Concrete Columneach61500
Reinforced Concrete Abutmentlinear ft.112773500
Reinforced Concrete Pier Caplinear ft.102564600
Pourable Jointlinear ft.205204001
Movable Bearingeach1800180
Steel Protective Coatingsq. ft.7200072
Fixed Bearingeach1800180
Steel Protective Coatingsq. ft.7200072
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2692530160
Reinforced Concrete Bridge Raillinear ft.269026531