I277 SBL US74WBL over NC27 (S. MCDOWELL ST.)


+35.21568, -80.84169
35°12'56" N, 80°50'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I277 SBL US74WBL over NC27 (S. MCDOWELL ST.)
Structure number:000000001190488
Old structure number:000000000119488 (from 1992 edition)
Location:0.5 MI. S. JCT. NC16
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:101.1 ft. [30.8 m]
Total length:170.0 ft. [51.8 m]
Roadway width between curbs:62.7 ft. [19.1 m]
Deck width edge-to-edge:65.6 ft. [20.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:14°
Owner:State Highway Agency [01]
Year built:1986
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: July 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:48,000 [as of 2013]
Truck traffic:16% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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]
Sufficiency rating:79.7
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018FairSatisfactorySatisfactoryFair4800079.7
July 2016FairSatisfactorySatisfactorySatisfactory4800090.3
July 2014FairSatisfactorySatisfactorySatisfactory4450090.7
July 2012FairGoodSatisfactorySatisfactory4300090.8
July 2010FairGoodSatisfactorySatisfactory3150091.9
September 2008FairGoodSatisfactoryGood2600092.5
September 2006GoodGoodGoodGood2550092.5
July 2004GoodVery GoodVery GoodGood4100091.0
June 2002GoodVery GoodVery GoodGood4000091.1
July 2000GoodVery GoodVery GoodGood2950092.1
May 1998GoodVery GoodVery GoodGood3790091.3
May 1996GoodVery GoodVery GoodGood2750092.3
May 1994GoodVery GoodVery GoodGood2750092.9
July 1992GoodVery GoodVery GoodGood4320091.6
July 1990GoodVery GoodVery GoodGood2380093.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,4761,074326760
Steel Protective Coatingsq. ft.19,48519,275825573
Reinforced Concrete Decksq. ft.11,1525,2543,1982,7000
Reinforced Concrete Columneach82420
Reinforced Concrete Abutmentlinear ft.160158020
Steel Pileeach2424000
Reinforced Concrete Pier Caplinear ft.2722115650
Concrete Protective Coatingsq. ft.625625000
Compression Jointlinear ft.26806797104
Elastomeric Bearingeach5453010
Steel Protective Coatingsq. ft.5454000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3422618100