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FAU 320 over MACKEY BRANCH

Map 

Coordinates:
+35.00694, -85.15333
35°00'25" N, 85°09'12" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:FAU 320 over MACKEY BRANCH
Structure number:33S43070005
Location:1.81 MI. E OF I-75 JCT.
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:18.0 ft. [5.5 m]
Total length:58.1 ft. [17.7 m]
Roadway width between curbs:59.7 ft. [18.2 m]
Deck width edge-to-edge:68.9 ft. [21.0 m]
Owner:State Highway Agency [01]
Year built:1992
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:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2015 

Status:Open, no restriction [A]
Average daily traffic:30,400 [as of 2014]
Truck traffic:3% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:48.5 tons [44.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:65.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$319,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201565.3Functionally obsolete---30400
February 201366.7Functionally obsolete---29550
February 201167.0Functionally obsolete---28970
March 200967.2Functionally obsolete---28590
March 200766.7Functionally obsolete---29690
January 200566.7Functionally obsolete---29570
February 200367.0Functionally obsolete---29050
April 200167.6Functionally obsolete---27730
March 199967.9Not deficient---27180
April 199769.3Not deficient---24230
April 199568.4Not deficient---26130
April 199369.5Not deficient---23880
May 199162.3Functionally obsoleteGoodGoodGood20500