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I-81 SBL over NS RAILWAY

Map

Coordinates:
+38.41178, -78.89285
38°24'42" N, 78°53'34" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-81 SBL over NS RAILWAY
Structure number:000000000020450
Location:1.06 RT 11 - 1.55 RT 253
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:67.9 ft. [20.7 m]
Total length:202.1 ft. [61.6 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:23.0 ft. [7.0 m]
Skew angle:43°
Owner:State Highway Agency [01]
Year built:1959
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
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:Latex Concrete or similar additive [3]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:26,425 [as of 2014]
Truck traffic:21% of total traffic
Deck condition:Satisfactory [6 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:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:82.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017FairSatisfactoryFairFair2642582.1
June 2015FairGoodSatisfactoryFair2642582.1
June 2013FairGoodSatisfactoryFair1850083.0
June 2011FairGoodSatisfactorySatisfactory1850094.2
June 2009FairGoodSatisfactorySatisfactory1850093.2
July 2007FairGoodSatisfactorySatisfactory1850093.2
September 2005FairGoodSatisfactorySatisfactory1850093.2
July 2003FairGoodSatisfactorySatisfactory1850093.2
July 2001FairGoodGoodSatisfactory1850093.2
August 1999FairGoodGoodSatisfactory1850094.2
June 1997FairGoodGoodSatisfactory1850094.2
May 1995FairGoodGoodSatisfactory1436594.9
August 1993FairGoodGoodFair1436583.7
April 1991FairGoodGoodFair1436583.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.1,6161,54041350
Deck
Reinforced Concrete Decksq. ft.8,8848,8701040
Wearing Surfacessq. ft.8,4867,48799900
Substructure
Reinforced Concrete Columneach2012800
Reinforced Concrete Pier Caplinear ft.2369996410
Joints
Compression Jointlinear ft.2361606700
Bearings
Movable Bearingeach2402400
Steel Protective Coatingsq. ft.4800480
Fixed Bearingeach2402400
Steel Protective Coatingsq. ft.4800480
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.4043684320
Reinforced Concrete Bridge Raillinear ft.4043921020