JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.3/angular.js"></script>
<div ng-app="myApp">
    <div ng-controller="MainCtrl">
        <div class="left">Original: 
            <pre>{{yourArray | json}}</pre></div>
        <div class="right">
        Updated:
            <pre>{{updated | json}}</pre></div>
    </div>
</div>

CSS

.left {
    width: 48%;
    float: left;
}
.right {
    width: 48%;
    float: right;
}

JavaScript

/* http://stackoverflow.com/questions/13696955/restructuring-json-with-angularjs-or-jquery/13697043#13697043 */

var app = angular.module('myApp', []);

app.controller('MainCtrl', function($scope) {
    $scope.yourArray = [
        {
        "address": "balh",
        "lat": 123,
        "long": 456},
    {
        "address": "balh",
        "lat": 321,
        "long": 543},
    {
        "address": "balh",
        "lat": 432,
        "long": 333},
    {
        "address": "balh",
        "lat": 123,
        "long": 456},
    {
        "address": "balh",
        "lat": 321,
        "long": 543},
    {
        "address": "balh",
        "lat": 432,
        "long": 333}
                    ];

    $scope.updated = {};

    for (var i = 0, c = 1, current = null; i < $scope.yourArray.length; i++) {
        if (i % 3 == 0) {
            $scope.updated[c++] = current = [];
        }
        current.push($scope.yourArray[i]);
    }
    
});