US421 SBL over SR1710


+36.11373, -80.58841
36°06'49" N, 80°35'18" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:US421 SBL over SR1710
Structure number:000000001970201
Old structure number:000000001970082 (from 1992 edition)
Location:.2 MI.S.JCT.SR1146
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:47.9 ft. [14.6 m]
Total length:132.9 ft. [40.5 m]
Roadway width between curbs:38.1 ft. [11.6 m]
Deck width edge-to-edge:41.0 ft. [12.5 m]
Vertical clearance below bridge:18.7 ft. [5.7 m]
Owner:State Highway Agency [01]
Year built:1991
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:3
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: June 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:9,000 [as of 2013]
Truck traffic:14% 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:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:76.9 tons [69.9 metric tons]
Inventory rating:45.9 tons [41.7 metric tons]
Sufficiency rating:68.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201568.0FairFairFairFairFO9000
June 2013100.0GoodGoodGoodGood-9000
June 2011100.0GoodGoodGoodGood-9500
July 2009100.0GoodGoodVery GoodGood-10250
September 2007100.0GoodVery GoodVery GoodVery Good-9500
September 2005100.0GoodVery GoodVery GoodVery Good-9500
July 2003100.0GoodVery GoodVery GoodVery Good-9500
July 2001100.0GoodVery GoodVery GoodVery Good-8500
November 199998.0GoodVery GoodVery GoodVery Good-8500
April 199196.6GoodVery GoodVery GoodVery Good-5750