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I-81 SBL & NBL over OLD AIRPORT ROAD

Map

Coordinates:
+36.63012, -82.12181
36°37'48" N, 82°07'19" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-81 SBL & NBL over OLD AIRPORT ROAD
Structure number:000000000024039
Location:1.91FR11;2.58TO11
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:100.1 ft. [30.5 m]
Total length:171.9 ft. [52.4 m]
Roadway width between curbs:54.5 ft. [16.6 m]
Deck width edge-to-edge:111.9 ft. [34.1 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:28°
Owner:State Highway Agency [01]
Year built:1994
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]

Latest Available Inspection: February 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:46,262 [as of 2014]
Truck traffic:21% 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:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:79.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$344,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2017FairSatisfactorySatisfactorySatisfactory4626279.0
February 2015FairSatisfactorySatisfactorySatisfactory4626279.0
February 2013FairSatisfactorySatisfactorySatisfactory4360979.0
February 2011FairSatisfactorySatisfactorySatisfactory4360975.0
February 2009FairSatisfactorySatisfactorySatisfactory4360975.0
November 2006FairSatisfactorySatisfactorySatisfactory4754475.0
December 2004FairSatisfactorySatisfactorySatisfactory4765075.0
December 2002FairFairSatisfactorySatisfactory4845574.0
December 2000FairFairSatisfactorySatisfactory4011874.0
December 1998FairFairSatisfactorySatisfactory4011874.0
January 1997FairFairGoodSatisfactory3500076.0
November 1994GoodGoodExcellentGood3500078.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.2,0402,0004000
Steel Protective Coatingsq. ft.25,18624,68650000
Deck
Reinforced Concrete Decksq. ft.19,234019,23400
Substructure
Reinforced Concrete Columneach1818000
Reinforced Concrete Abutmentlinear ft.2602303000
Reinforced Concrete Pier Caplinear ft.242238400
Joints
Pourable Jointlinear ft.2582253300
Bearings
Movable Bearingeach36121860
Steel Protective Coatingsq. ft.7207200
Fixed Bearingeach3630510
Steel Protective Coatingsq. ft.7207200
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.510500910