I124 NBL over W.MAIN ST (FAU 3553)


+35.03944, -85.31750
35°02'22" N, 85°19'03" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I124 NBL over W.MAIN ST (FAU 3553)
Structure number:33I01240009
Location:.01 MI FM SR58 W 20TH ST
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:56.1 ft. [17.1 m]
Total length:208.0 ft. [63.4 m]
Roadway width between curbs:51.5 ft. [15.7 m]
Deck width edge-to-edge:62.7 ft. [19.1 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:40°
Owner:State Highway Agency [01]
Year built:1963
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 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: August 2014 

Status:Open, no restriction [A]
Average daily traffic:69,530 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Good [7 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:52.5 tons [47.7 metric tons]
Inventory rating:31.7 tons [28.8 metric tons]
Sufficiency rating:88.4

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201488.4Not deficientGoodGoodGood69530
August 201289.9Not deficientVery GoodGoodGood79600
August 201092.1Not deficientExcellentGoodGood81010
August 200878.5Not deficientFairFairSatisfactory78650
August 200691.7Not deficientFairSatisfactorySatisfactory68800
August 200491.6Not deficientFairSatisfactorySatisfactory69580
September 200291.6Not deficientFairSatisfactorySatisfactory69220
October 200078.0Not deficientFairSatisfactorySatisfactory60470
October 199870.0Structurally deficientSeriousSatisfactorySatisfactory62630
September 199874.0Structurally deficientSeriousSatisfactoryGood62630
August 199671.0Structurally deficientSeriousSatisfactoryGood75820
January 199571.0Structurally deficientSeriousSatisfactoryGood55200
December 199285.2Structurally deficientSeriousSatisfactoryGood46850
October 199085.2Structurally deficientSeriousSatisfactoryGood46850