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


+35.21569, -80.84170
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:16.7 ft. [5.1 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:MS 18+Mod / HS 20+Mod [6]
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 2014 

Status:Open, no restriction [A]
Average daily traffic:44,500 [as of 2012]
Truck traffic:16% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:98.8 tons [89.8 metric tons]
Inventory rating:73.8 tons [67.1 metric tons]
Sufficiency rating:90.7

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201490.7Not deficientSatisfactorySatisfactorySatisfactory44500
July 201290.8Not deficientGoodSatisfactorySatisfactory43000
July 201091.9Not deficientGoodSatisfactorySatisfactory31500
September 200892.5Not deficientGoodSatisfactoryGood26000
September 200692.5Not deficientGoodGoodGood25500
July 200491.0Not deficientVery GoodVery GoodGood41000
June 200291.1Not deficientVery GoodVery GoodGood40000
July 200092.1Not deficientVery GoodVery GoodGood29500
May 199891.3Not deficientVery GoodVery GoodGood37900
May 199692.3Not deficientVery GoodVery GoodGood27500
May 199492.9Not deficientVery GoodVery GoodGood27500
July 199291.6Not deficientVery GoodVery GoodGood43200
July 199093.1Not deficientVery GoodVery GoodGood23800