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 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:70,240 [as of 2015]
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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201639.5FairFairFairFair-70240
August 201439.5FairFairFairFair-69810
August 201239.5FairFairSatisfactoryFair-68930
August 201049.0FairFairSatisfactoryFair-63390
August 200849.0FairFairSatisfactoryFair-68790
August 200638.0PoorFairPoorFairSD77940
August 200438.0PoorFairPoorFairSD77610
August 200238.0PoorFairPoorFairSD77900
October 200037.0PoorPoorPoorFairSD69310
September 199848.0PoorSeriousSatisfactoryFairSD70090
August 199645.2PoorSeriousSatisfactoryFairSD75820
December 199446.0PoorSeriousSatisfactoryFairSD55200
December 199257.0PoorSeriousSatisfactoryFairSD46850
September 199054.0PoorSeriousSatisfactoryFairSD46850