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 2014 

Status:Open, no restriction [A]
Average daily traffic:85,420 [as of 2014]
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:85.6

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
December 201485.6Not deficientVery GoodVery GoodVery Good85420
January 201384.9Not deficientVery GoodVery GoodVery Good92460
January 201184.6Not deficientVery GoodVery GoodVery Good95510
January 200984.0Not deficientVery GoodVery GoodVery Good101290
November 200689.0Not deficientVery GoodVery GoodVery Good84160
November 200489.0Not deficientSatisfactoryGoodGood84820
January 200389.3Not deficientSatisfactoryGoodGood93170
December 200089.8Not deficientSatisfactoryGoodGood87240
October 199889.5Not deficientSatisfactoryGoodGood90790
January 199768.7Not deficientSatisfactoryGoodGood84940
January 199571.8Not deficientSatisfactorySatisfactorySatisfactory74220
November 199272.8Not deficientSatisfactorySatisfactorySatisfactory64200
February 199272.8Functionally obsoleteSatisfactorySatisfactorySatisfactory64200