Rt 29 NBL Bypass over Route 1156


+36.54321, -79.45830
36°32'36" N, 79°27'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Rt 29 NBL Bypass over Route 1156
Structure number:000000000013513
Location:0.36-29N Bus/0.32-Rt.786
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:100.1 ft. [30.5 m]
Total length:103.0 ft. [31.4 m]
Roadway width between curbs:55.1 ft. [16.8 m]
Deck width edge-to-edge:58.4 ft. [17.8 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1980
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Main span material:Steel [3]
Main span 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: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:7,890 [as of 2014]
Truck traffic:16% of total traffic
Deck condition:Satisfactory [6 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:Equal to present minimum criteria [6]
Underclearances appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:88.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,691,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairSatisfactoryFairSatisfactory789088.2
January 2017FairSatisfactoryFairSatisfactory789088.2
August 2015PoorGoodPoorGood789071.9
August 2014PoorGoodPoorGood1600070.8
February 2014PoorGoodPoorGood1600070.8
August 2012PoorGoodPoorGood1600070.8
February 2012PoorGoodPoorGood777871.9
February 2011PoorGoodPoorGood777871.9
February 2010FairGoodFairGood777888.2
February 2008FairGoodFairGood771788.2
February 2006FairGoodFairGood582388.4
April 2004GoodGoodGoodGood518594.5
February 2002GoodGoodGoodGood554094.5
February 2000FairGoodFairGood457783.5
February 1998FairGoodFairGood457783.5
March 1996GoodGoodGoodGood310094.7
May 1994GoodGoodVery GoodGood650094.5
February 1992GoodGoodVery GoodGood187894.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.686680600
Steel Protective Coatingsq. ft.9,4229,422000
Reinforced Concrete Decksq. ft.6,0166,0061000
Wearing Surfacessq. ft.5,6780145,6640
Reinforced Concrete Abutmentlinear ft.130795100
Compression Jointlinear ft.127012700
Movable Bearingeach77000
Steel Protective Coatingsq. ft.4242000
Fixed Bearingeach77000
Steel Protective Coatingsq. ft.4242000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2079311400