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I-85 NB over SOUTHERN RAILROAD

Map

Coordinates:
+35.15964, -81.46743
35°09'35" N, 81°28'03" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-85 NB over SOUTHERN RAILROAD
Structure number:000000000002673
Location:4.0 MI N OF BLACKSBURG
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:57.1 ft. [17.4 m]
Total length:256.9 ft. [78.3 m]
Roadway width between curbs:30.5 ft. [9.3 m]
Deck width edge-to-edge:37.4 ft. [11.4 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Skew angle:50°
Owner:State Highway Agency [01]
Year built:1958
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
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:Bituminous [6]

Latest Available Inspection: January 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:22,450 [as of 2017]
Truck traffic:18% 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:Meets minimum tolerable limits to be left in place as is [4]
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]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:67.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$1,049,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2018FairSatisfactorySatisfactorySatisfactory2245067.0
January 2016FairSatisfactorySatisfactorySatisfactory1770077.9
January 2014FairSatisfactorySatisfactorySatisfactory2055077.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.1,5301,33002000
Deck
Reinforced Concrete Decksq. ft.9,5379,5003700
Substructure
Reinforced Concrete Columneach3636000
Reinforced Concrete Pier Caplinear ft.244244000
Joints
Pourable Jointlinear ft.1730015023
Bearings
Movable Bearingeach6000600
Bridge Rail
Other Material Bridge Raillinear ft.510510000