how to convert Bridge GPS coordinates

No need to convert. Just copy and paste from Bridge to Google Maps and delete the commas, leaving a space. For ex: in Bridge: 37,52.8146N and 25,46.6101W paste it in Google: 37 52.8146N and 25 46.6101W

We're a problem resolution focused bunch here...

/* But I also want to convert Bridge GPS coordinates to put into my database.
Then you have to do the conversion manually. That's what I meant. */

Do you wish to import a batch of data, or is it just manually input into the DB one at a time?

I'm sure a spreadsheet or some online calculator could help streamline the process, or this could be scripted or ExifTool could be used. 

ExifTool reports the GPS info from Bridge, which I believe uses the EXIF GPS format as:

[GPS] GPSLatitudeRef : North
[GPS] GPSLatitude : 57 deg 46' 47.40"
[GPS] GPSLongitudeRef : East
[GPS] GPSLongitude : 12 deg 2' 27.64"

The following command can reformat this data:

exiftool -c '%.6f' -GPSPosition 'PATHtoFILEorFOLDER'

Which will output the data as:

GPS Position: 57.779833 N, 12.041012 E

Which should be easier to use and can be output to .txt or .csv for a batch of images.

I can not state I know how.  Years ago I found Photoshop script that seems to do what you want. However it may be using the Camera EXIF meta data which may not be the bridge data you are referring to. I hardly ever use the bridge.  I forget what the script originally supported.  I may have used a sledge hammer on the script to get it to do what I wanted it to do.  I knew almost nothing about JavaScript and Photoshop Scripting back then. I know just a little more these days.   I can not say I use the script.  But I just downloaded a image of the London Bridge and opened it in Photoshop and ran the script.  A browser window opened with Google Map position  on  the London bridge in Europe not the one in our desert. So it seems like  the code may do what you want.

// Open Map from GPS Location.jsx
// Version 1.0
// Shaun Ivory (shaun@ivory.org)
//
// Feel free to modify this script.  If you do anything interesting with it,
// please let me know.

// JJMack I just used my sledge hammer on Shaun's Photoshop script 
// I sucked in his include file and removed his include statement
// then I commented out his dialog and just Goolge Map the GPS location

/*
<javascriptresource>
<about>$$$/JavaScripts/GoogleMapGPS/About=JJMack's Google Map GPS.^r^rCopyright 2014 Mouseprints.^r^rScript utility for action.^rNOTE:Modified Shaun's Ivory just Google Map GPS location</about>
<category>JJMack's Action Utility</category>
</javascriptresource>
*/

//
// Constants which identify the different mapping sites
//
c_MapWebsites =
[
    "google",
    "mappoint",
    "virtualearth"
];

var c_nDefaultMapWebsiteIndex = 2;
var c_strTemporaryUrlFile = "~/TemporaryPhotoshopMapUrl.url";

var c_strPhotoCaption = "Photo%20Location";
// EXIF constants
c_ExifGpsLatitudeRef   = "GPS Latitude Ref"
c_ExifGpsLatitude      = "GPS Latitude"
c_ExifGpsLongitudeRef  = "GPS Longitude Ref"
c_ExifGpsLongitude     = "GPS Longitude"
c_ExifGpsAltitudeRef   = "GPS Altitude Ref"
c_ExifGpsAltitude      = "GPS Altitude"
c_ExifGpsTimeStamp     = "GPS Time Stamp"
c_ExifMake             = "Make"
c_ExifModel            = "Model"
c_ExifExposureTime     = "Exposure Time"
c_ExifAperture         = "F-Stop"
c_ExifExposureProgram  = "Exposure Program"
c_ExifIsoSpeedRating   = "ISO Speed Ratings"
c_ExifDateTimeOriginal = "Date Time Original"
c_ExifMaxApertureValue = "Max Aperture Value"
c_ExifMeteringMode     = "Metering Mode"
c_ExifLightSource      = "Light Source"
c_ExifFlash            = "Flash"
c_ExifFocalLength      = "Focal Length"
c_ExifColorSpace       = "Color Space"
c_ExifWidth            = "Pixel X Dimension"
c_ExifHeight           = "Pixel Y Dimension"

function GetRawExifValueIfPresent(strExifValueName)
{
    // Empty string means it wasn't found
    var strResult = new String("");

    // Make sure there is a current document
    if (app.documents.length)
    {
        // Loop through each element in the EXIF properties array
        for (nCurrentElement = 0, nCount = 0; nCurrentElement < activeDocument.info.exif.length; ++nCurrentElement)
        {
            // Get the current element as a string
            var strCurrentRecord = new String(activeDocument.info.exif[nCurrentElement]);

            // Find the first comma
            var nComma = strCurrentRecord.indexOf(",");
            if (nComma >= 0)
            {
                // Everything before the comma is the field name
                var strCurrentExifName = strCurrentRecord.substr(0, nComma);

                // Is it a valid string?
                if (strCurrentExifName.length)
                {
                    // Is this our element?
                    if (strCurrentExifName == strExifValueName)
                    {
                        // Everything after the comma is the value, so
                        // save it and exit the loop
                        strResult = strCurrentRecord.substr(nComma + 1);
                        break;
                    }
                }
            }
        }
    }
    return strResult;
}

//
// Convert a Photoshop latitude or longitude, formatted like 
// this:
//
//      Example: 47.00 38.00' 33.60"
//
// to the decimal form:
//
//      Example: 47.642667
//
// It returns an empty string if the string is in an unexpected
// form.
//
function ConvertLatitudeOrLongitudeToDecimal(strLatLong)
{
    var nResult = 0.0;

    // Copy the input string
    var strSource = new String(strLatLong);

    // Find the first space
    nIndex = strSource.indexOf(" ");
    if (nIndex >= 0)
    {
        // Copy up to the first space
        strDegrees = strSource.substr(0, nIndex);

        // Skip this part, plus the space
        strSource = strSource.substr(nIndex + 1);

        // Find the tick mark
        nIndex = strSource.indexOf("'");
        if (nIndex >= 0)
        {
            // Copy up to the tick mark
            strMinutes = strSource.substr(0, nIndex);

            // Skip this chunk, plus the tick and space
            strSource = strSource.substr(nIndex + 2);

            // Find the seconds mark: "
            nIndex = strSource.indexOf("\"");
            if (nIndex >= 0)
            {
                // Copy up to the seconds
                strSeconds = strSource.substr(0, nIndex);

                // Convert to numbers
                var nDegrees = parseFloat(strDegrees);
                var nMinutes = parseFloat(strMinutes);
                var nSeconds = parseFloat(strSeconds);

                // Use the correct symbols
                nResult = nDegrees + (nMinutes / 60.0) + (nSeconds / 3600.0);
            }
        }
    }

    return nResult;
}

function GetDecimalLatitudeOrLongitude(strExifLatOrLong, strExifLatOrLongRef, strResult)
{
    var strResult = "";

    // Get the exif values
    strLatOrLong = GetRawExifValueIfPresent(strExifLatOrLong);
    strLatOrLongRef = GetRawExifValueIfPresent(strExifLatOrLongRef);

    // If we were able to read them
    if (strLatOrLong.length && strLatOrLongRef.length)
    {
        // Parse and convert to a decimal
        var nResult = ConvertLatitudeOrLongitudeToDecimal(strLatOrLong);

        // If we are in the southern or western hemisphere, negate the result
        if (strLatOrLongRef[0] == 'S' || strLatOrLongRef[0] == 'W')
        {
            nResult *= -1;
        }

        strResult = nResult.toString();
    }
    return strResult;
}

function CreateGoogleMapsUrl(strLatitude, strLongitude)
{
    return "http://maps.google.com/maps?ll=" + strLatitude + "," + strLongitude + "&spn=0.01,0.01";
}

function CreateMappointUrl(strLatitude, strLongitude)
{
    return "http://mappoint.msn.com/map.aspx?L=USA&C=" + strLatitude + "%2c" + strLongitude + "&A=50&P=|" + strLatitude + "%2c" + strLongitude + "|39|" + c_strPhotoCaption +"|L1|"
}

function CreateVirtualEarthUrl(strLatitude, strLongitude)
{
    return "http://virtualearth.msn.com/default.aspx?v=2&style=h&lvl=17&cp=" + strLatitude + "~" + strLongitude + "&sp=an." + strLatitude + "_" + strLongitude + "_" + c_strPhotoCaption + "_";
}

function CMapSiteSelection()
{
    // Initialize default map provider
    this.Site = c_MapWebsites[c_nDefaultMapWebsiteIndex];
    return this;
}

function ShowMyDialog(strLatitude, strLongitude)
{
    // Use the default website
    var strCurrentSite = c_MapWebsites[c_nDefaultMapWebsiteIndex];

    dlgMain = new Window("dialog", "Choose a Map Website");

    // Add the top group
    dlgMain.TopGroup = dlgMain.add("group");
	dlgMain.TopGroup.orientation = "row";
	dlgMain.TopGroup.alignChildren = "top";
	dlgMain.TopGroup.alignment = "fill";

    // Add the left group
    dlgMain.TopGroup.LeftGroup = dlgMain.TopGroup.add("group");
    dlgMain.TopGroup.LeftGroup.orientation = "column";
    dlgMain.TopGroup.LeftGroup.alignChildren = "left";
    dlgMain.TopGroup.LeftGroup.alignment = "fill";

    dlgMain.AspectRatioGroup = dlgMain.TopGroup.LeftGroup.add("panel", undefined, "Map Website");
    dlgMain.AspectRatioGroup.alignment = "fill";
    dlgMain.AspectRatioGroup.orientation = "column";
    dlgMain.AspectRatioGroup.alignChildren = "left";

    // Add radio buttons
    dlgMain.virtualEarth = dlgMain.AspectRatioGroup.add("radiobutton", undefined, "Windows Live Local (aka Virtual Earth)");
    dlgMain.virtualEarth.onClick = function virtualEarthOnClick()
    {
        strCurrentSite = "virtualearth";
    }

    dlgMain.mappoint = dlgMain.AspectRatioGroup.add("radiobutton", undefined, "MSN Maps && Directions (aka MapPoint)");
    dlgMain.mappoint.onClick = function mappointOnClick()
    {
        strCurrentSite = "mappoint";
    }

    dlgMain.google = dlgMain.AspectRatioGroup.add("radiobutton", undefined, "Google Local (aka Google Maps)");
    dlgMain.google.onClick = function googleOnClick()
    {
        strCurrentSite = "google";
    }

    // Set the checked radio button
    if (strCurrentSite == "google")
    {
        dlgMain.google.value = true;
    }
    else if (strCurrentSite == "mappoint")
    {
        dlgMain.mappoint.value = true;
    }
    else
    {
        dlgMain.virtualEarth.value = true;
    }

    // Add the button group
    dlgMain.TopGroup.RightGroup = dlgMain.TopGroup.add("group");
    dlgMain.TopGroup.RightGroup.orientation = "column";
    dlgMain.TopGroup.RightGroup.alignChildren = "left";
    dlgMain.TopGroup.RightGroup.alignment = "fill";

    // Add the buttons
    dlgMain.btnOpenSite = dlgMain.TopGroup.RightGroup.add("button", undefined, "Open");
    dlgMain.btnClose = dlgMain.TopGroup.RightGroup.add("button", undefined, "Exit");

    dlgMain.btnClose.onClick = function()
    { 
        dlgMain.close(true);
    }

    dlgMain.btnOpenSite.onClick = function()
    {
        // Which website?
        var strUrl = "";
        switch (strCurrentSite)
        {
        case "mappoint":
            strUrl = CreateMappointUrl(strLatitude, strLongitude);
            break;

        case "google":
            strUrl = CreateGoogleMapsUrl(strLatitude, strLongitude);
            break;

        case "virtualearth":
        default:
            strUrl = CreateVirtualEarthUrl(strLatitude, strLongitude);
            break;

        }

        // Create the URL file and launch it
        var fileUrlShortcut = new File(c_strTemporaryUrlFile);
        fileUrlShortcut.open('w');
        fileUrlShortcut.writeln("[InternetShortcut]")
        fileUrlShortcut.writeln("URL=" + strUrl);
        fileUrlShortcut.execute();
    }

    // Set the button characteristics
    dlgMain.cancelElement = dlgMain.btnClose;
    dlgMain.defaultElement = dlgMain.btnOpenSite;

    dlgMain.center();
    return dlgMain.show();
}
function GoogleMap(strLatitude, strLongitude)
{ 
	strUrl = CreateGoogleMapsUrl(strLatitude, strLongitude)
		try{
		var URL = new File(Folder.temp + "/GoogleMapIt.html");
		URL.open("w");
		URL.writeln('<html><HEAD><meta HTTP-EQUIV="REFRESH" content="0; ' + strUrl + ' "></HEAD></HTML>');
		/*
		URL.writeln("<!DOCTYPE html>");
		URL.writeln("<html><head>");
		URL.writeln('<meta name="viewport" content="initial-scale=1.0, user-scalable=no">');
		URL.writeln('<meta charset="utf-8">');
		URL.writeln("<title>Simple markers</title>");
		URL.writeln("<style>html, body, #map-canvas {height: 100%;margin: 0px;padding: 0px}</style>");
		URL.writeln('<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>');
		URL.writeln("<script>function initialize() {");
		URL.writeln("var myLatlng = new google.maps.LatLng(" + strLatitude +"," +  strLongitude + ",true);");
		URL.writeln("var mapOptions = {zoom: 15,center: myLatlng,mapTypeId: google.maps.MapTypeId.ROADMAP}");
		URL.writeln("var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);");
		URL.writeln("var marker = new google.maps.Marker({position: myLatlng,map: map,title: 'My Picture Name'});}");
		URL.writeln("google.maps.event.addDomListener(window, 'load', initialize);");
		URL.writeln('</script></head><body><div id="map-canvas"></div></body></html>');
		*/
		URL.close();
		URL.execute();   // The temp file is created but this fails to open the users default browser using Photoshop CC prior Photoshop versions work
	}catch(e){
		alert("Error, Can Not Open.");
	};

}

function OpenMapUrl()
{
    // Get the latitude
    var strDecimalLatitude = GetDecimalLatitudeOrLongitude(c_ExifGpsLatitude, c_ExifGpsLatitudeRef);
    if (strDecimalLatitude.length)
    {
        // Get the longitude
        var strDecimalLongitude = GetDecimalLatitudeOrLongitude(c_ExifGpsLongitude, c_ExifGpsLongitudeRef);
        if (strDecimalLongitude.length)
        {
            //ShowMyDialog(strDecimalLatitude, strDecimalLongitude);
			GoogleMap(strDecimalLatitude, strDecimalLongitude);
        }
    }
}

function Main()
{
    if (app.documents.length > 0)
    {
        OpenMapUrl();
    }
    else
    {
        alert("You don't have an image opened.  Please open an image before running this script.");
    }
}

Main();