Using PowerShell to test for broken URL redirects

This PowerShell script iterates through a list of URLS from a CSV file looking for broken redirects. If any are found they are noted to a file.

#------------------------------------------------------------
 cls
 #------------------------------------------------------------
 # BEGIN: Config
 #------------------------------------------------------------
 # Where are the files?
 $path = "C:\checkLinks"; # Do NOT end with \
 # Source
 $csv = import-csv -Path "$path\source.csv";
 # Report
 $targetFile = "report.csv";
 # Where does the site send you to if a link is broken?  Look at "OriginalString" in code as it's possibly not what you assume it is.
 $redirStr = "/error";
 # What is the name of the column in the CSV file that has the URLs?
 $urlColumn = "url";
 #------------------------------------------------------------
 # END: Config
 #------------------------------------------------------------

#------------------------------------------------------------
 # BEGIN: SUPPORTING FUNCTIONS
 #------------------------------------------------------------

#============================================================
 # BEGIN: Get-URL
 # DESC: Receives params, checks URL for redirect and if redirect
 # matches str writes to report file.
 #============================================================
 function Get-URL {
 param([string]$url)
 try
 {
 "Checking: $url"
 #========================================================
 $wr = [System.Net.HttpWebRequest]::Create($url);
 $wrRsp = $wr.GetResponse();
 $temp = $wrRsp.ResponseUri.AbsolutePath
 $redirectURL = $wrRsp.ResponseUri.OriginalString
 $redirectURL
 if ($temp -like $redirStr) {
 Add-Content $path\$targetFile "$url"
 };
 $wrRsp.Close();
 #========================================================
 } catch {
 $errorStatus = "Exception Message: " + $_.Exception.Message;
 Write-Host $errorStatus;
 }
 };
 #============================================================
 # END: Get-URL
 #============================================================

#------------------------------------------------------------
 # END: SUPPORTING FUNCTIONS
 #------------------------------------------------------------

#============================================================
 # START MAIN
 #============================================================

#============================================================
 # BEGIN: Step 1
 #============================================================
 # A: Go to folder
 cd $path
 # B: Does report file exist? If no, create it.
 if (!(Test-Path "$path\$targetFile")) {
 New-Item -path $path -name $targetFile -type "file"
 };
 #============================================================
 # END: Step 1
 #============================================================

#============================================================
 # BEGIN: Step 2
 #============================================================
 foreach($line in $csv)
 {

# Loop through each row and check if URL has value.
 $properties = $line | Get-Member -MemberType Properties
 for($i=0; $i -lt $properties.Count;$i++)
 {
 $column = $properties[$i]
 $columnvalue = $line | Select -ExpandProperty $column.Name

#-----------------------------------------------------
 # BEGIN: Send to check URL
 #-----------------------------------------------------
 if ($column.Name -eq $urlColumn){
 if ($columnvalue.Length -gt 4){
 Get-URL $columnvalue;
 };
 };
 #-----------------------------------------------------
 # END: Send to check URL
 #-----------------------------------------------------

    };
 };
 #============================================================
 # END: Step 2
 #============================================================