FAU 4831 over CALLAHAN RD.-LL / I75


+36.02472, -83.99694
36°01'29" N, 83°59'49" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:FAU 4831 over CALLAHAN RD.-LL / I75
Structure number:47I00750038
Purpose:Carries highway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:61.4 ft. [18.7 m]
Total length:218.5 ft. [66.6 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:36.4 ft. [11.1 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1969
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:Concrete continuous [2]
Main spans design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: January 2015 

Status:Open, no restriction [A]
Average daily traffic:22,950 [as of 2015]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Good [7 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:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:40.6 tons [36.9 metric tons]
Inventory rating:23.8 tons [21.6 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:41.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,758,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
January 201541.5Functionally obsoleteSatisfactoryFairGood22950
January 201341.5Functionally obsoleteSatisfactoryFairGood22950
January 201165.6Functionally obsoleteSatisfactoryGoodGood22950
January 200964.6Functionally obsoleteSatisfactoryGoodGood22950
January 200768.0Functionally obsoleteSatisfactoryGoodGood18070
December 200474.0Not deficientSatisfactoryGoodGood12540
March 200376.7Not deficientSatisfactoryGoodGood11380
March 200176.0Not deficientGoodGoodGood10690
December 199878.4Not deficientGoodGoodGood9820
February 199781.2Not deficientGoodGoodGood3900
February 199581.3Not deficientGoodGoodGood3700
January 199390.8Not deficientGoodGoodGood1000
November 199090.8Not deficientGoodGoodGood1000