US421 NBL over DIRT


+35.32963, -78.66267
35°19'47" N, 78°39'46" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US421 NBL over DIRT
Structure number:000000000850023
Location:0.9 MI.S.JCT.NC55
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:21.0 ft. [6.4 m]
Total length:111.9 ft. [34.1 m]
Roadway width between curbs:28.2 ft. [8.6 m]
Deck width edge-to-edge:31.5 ft. [9.6 m]
Vertical clearance below bridge:19.7 ft. [6.0 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1957
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 9 / H 10 [1]
Number of main spans:5
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:7,000 [as of 2012]
Truck traffic:12% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:78.9
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2017GoodGoodGoodGood700078.9
February 2015GoodGoodGoodGood700078.9
February 2013GoodGoodGoodGood500079.5
February 2011FairFairFairFair650064.5
February 2009FairSatisfactorySatisfactorySatisfactory700076.8
January 2007FairSatisfactorySatisfactorySatisfactory650077.0
January 2005FairSatisfactorySatisfactorySatisfactory650077.0
January 2003FairFairFairSatisfactory405065.5
February 2001FairFairFairSatisfactory700064.3
January 1999FairFairFairSatisfactory670064.4
January 1991FairFairFairSatisfactory940052.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.88780100
Prestressed Concrete Pileeach2016310
Reinforced Concrete Pier Caplinear ft.116115100
Bridge Rail
Other Material Bridge Raillinear ft.228222240
Steel Protective Coatingsq. ft.970970000
Reinforced Concrete Slabsq. ft.3,5322,27211,2590