I40 over I40 / NORTH 6TH ST.


+35.98417, -83.91472
35°59'03" N, 83°54'53" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I40 over I40 / NORTH 6TH ST.
Structure number:47I00400075
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:79.7 ft. [24.3 m]
Total length:177.8 ft. [54.2 m]
Roadway width between curbs:165.0 ft. [50.3 m]
Deck width edge-to-edge:169.0 ft. [51.5 m]
Vertical clearance below bridge:24.9 ft. [7.6 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1967
Year reconstructed:2006
Historic significance:Historical significance is not determinable at this time [4]
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:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: December 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:95,720 [as of 2015]
Truck traffic:14% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
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:48.5 tons [44.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:84.6

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
December 201684.6GoodVery GoodVery GoodVery GoodFO95720
December 201485.6GoodVery GoodVery GoodVery Good-85420
January 201384.9GoodVery GoodVery GoodVery Good-92460
January 201184.6GoodVery GoodVery GoodVery Good-95510
January 200984.0GoodVery GoodVery GoodVery Good-101290
November 200689.0GoodVery GoodVery GoodVery Good-84160
November 200489.0FairSatisfactoryGoodGood-84820
January 200389.3FairSatisfactoryGoodGood-93170
December 200089.8FairSatisfactoryGoodGood-87240
October 199889.5FairSatisfactoryGoodGood-90790
January 199768.7FairSatisfactoryGoodGood-84940
January 199571.8FairSatisfactorySatisfactorySatisfactory-74220
November 199272.8FairSatisfactorySatisfactorySatisfactory-64200
February 199272.8FairSatisfactorySatisfactorySatisfactoryFO64200