I40 over I40 / 21ST. STREET


+35.96250, -83.94278
35°57'45" N, 83°56'34" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I40 over I40 / 21ST. STREET
Structure number:47I00400051
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:63.7 ft. [19.4 m]
Total length:142.4 ft. [43.4 m]
Roadway width between curbs:129.9 ft. [39.6 m]
Deck width edge-to-edge:131.9 ft. [40.2 m]
Vertical clearance below bridge:18.0 ft. [5.5 m]
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1981
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 continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: November 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:154,010 [as of 2015]
Truck traffic:10% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:55.4 tons [50.4 metric tons]
Inventory rating:30.7 tons [27.9 metric tons]
Sufficiency rating:75.9
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,799,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201675.9FairSatisfactoryGoodGoodFO154010
November 201475.9FairSatisfactoryGoodGoodFO144580
November 201264.9FairSatisfactoryGoodFairFO131940
November 201064.9FairSatisfactoryGoodFairFO127990
January 200962.9FairSatisfactoryGoodFairFO127590
October 200664.9FairSatisfactoryGoodFairFO114820
November 200464.9FairSatisfactoryGoodFairFO105740
November 200274.9FairFairGoodSatisfactoryFO112650
November 200074.9FairFairGoodSatisfactoryFO108940
October 199874.9FairFairGoodSatisfactoryFO126720
November 199680.0FairFairGoodSatisfactoryFO104280
December 199481.0FairSatisfactoryGoodSatisfactoryFO76100
October 199281.0GoodGoodGoodGoodFO89000
October 199081.0GoodGoodGoodGoodFO89000