South Boston Road over Rt. 29 Bypass NBL&SBL


+36.58407, -79.35965
36°35'03" N, 79°21'35" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:South Boston Road over Rt. 29 Bypass NBL&SBL
Structure number:000000000023425
Location:1.71Rt 29 Bus-1.09 Rt 729
Purpose:Carries highway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:94.2 ft. [28.7 m]
Total length:286.1 ft. [87.2 m]
Roadway width between curbs:50.5 ft. [15.4 m]
Deck width edge-to-edge:53.8 ft. [16.4 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1992
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:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:8,382 [as of 2014]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
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:90.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$4,235,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairGoodSatisfactoryGood838290.1
April 2016FairGoodSatisfactoryGood838290.1
April 2014FairGoodSatisfactoryGood2500090.5
April 2012FairGoodSatisfactoryGood930992.1
April 2010FairGoodSatisfactoryGood930994.1
April 2008FairGoodSatisfactoryGood930994.1
June 2006FairGoodSatisfactoryGood822694.2
May 2004GoodGoodGoodGood765094.2
August 2002GoodGoodGoodGood1017094.0
June 2000GoodGoodGoodGood928893.0
September 1998GoodGoodGoodGood928893.0
July 1996GoodGoodVery GoodGood928893.0
July 1994GoodGoodVery GoodGood928893.0
June 1992GoodExcellentExcellentExcellent-93.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,4041,396800
Steel Protective Coatingsq. ft.17,40017,398200
Reinforced Concrete Decksq. ft.15,39515,2999600
Reinforced Concrete Columneach1201200
Reinforced Concrete Abutmentlinear ft.1223859250
Reinforced Concrete Pier Caplinear ft.16710141160
Compression Jointlinear ft.2171830034
Movable Bearingeach2402310
Steel Protective Coatingsq. ft.144001440
Fixed Bearingeach1801710
Steel Protective Coatingsq. ft.108001080
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.57228628600