I124 over 20TH ST W. (FAU 5395)


+35.03639, -85.31917
35°02'11" N, 85°19'09" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I124 over 20TH ST W. (FAU 5395)
Structure number:33I01240005
Location:1.5 MI OF I24
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:65.0 ft. [19.8 m]
Total length:227.0 ft. [69.2 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:48.2 ft. [14.7 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Skew angle:31°
Owner:State Highway Agency [01]
Year built:1962
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Steel [3]
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: August 2014 

Status:Open, no restriction [A]
Average daily traffic:69,810 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:35.6 tons [32.4 metric tons]
Inventory rating:21.8 tons [19.8 metric tons]
Sufficiency rating:39.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$4,429,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201439.5Not deficientFairFairFair69810
August 201239.5Not deficientFairSatisfactoryFair68930
August 201049.0Not deficientFairSatisfactoryFair63390
August 200849.0Not deficientFairSatisfactoryFair68790
August 200638.0Structurally deficientFairPoorFair77940
August 200438.0Structurally deficientFairPoorFair77610
August 200238.0Structurally deficientFairPoorFair77900
October 200037.0Structurally deficientPoorPoorFair69310
September 199848.0Structurally deficientSeriousSatisfactoryFair70090
August 199645.2Structurally deficientSeriousSatisfactoryFair75820
December 199446.0Structurally deficientSeriousSatisfactoryFair55200
December 199257.0Structurally deficientSeriousSatisfactoryFair46850
September 199054.0Structurally deficientSeriousSatisfactoryFair46850