Unable to get parameters using Zend Routing Chain - php

Question

In my bootstrap file, I have the following routing chain. The desired behaviour is to send any request through /usa/:controller/:action to the local module.
For instance, when http://{hostname}/usa/index/index is called, the request goes through the local module, index controller, index action.
The problem I am having is adding parameters. For instance, when I request http://{hostname}/usa/index/index/id/5 to try to get the id parameter, I get the following error message:
An Error occurred. Page not found. Exception information: Message: Invalid controller specified (usa) with the following request params:
array (
'controller' => 'usa',
'action' => 'index',
'id' => '5',
'module' => 'default',
)
How can I set up the chain routing in order to still utilize other parameters?
Here is my code in the application bootstrap:
protected function _initRouting(){
$router = Zend_Controller_Front::getInstance()->getRouter(); // Get the main router from the front controller.
$router->addDefaultRoutes(); // Don't forget default routes!
//get default local route (directs to the local module)
$defaultLocalRoute = new Zend_Controller_Router_Route(
'/:controller/:action',
array(
'module' => 'local',
'controller' => 'index',
'action' => 'index'
)
);
$regionRoute = new Zend_Controller_Router_Route(
'/usa/',
array('region' => 'usa')
);
//chain this region route to the default local route that directs to the local module
$fullRegionRoute = $regionRoute->chain($defaultLocalRoute);
//add the full route to the router (ie. hamiltonRoute, atlanticcaRoute)
$regionRouteName = 'usaRoute';
$router->addRoute($regionRouteName, $fullRegionRoute);
}

Answer 1

Adding a * to the end of the $defaultLocalRoute was able to fix this issue for me.
//get default local route (directs to the local module)
$defaultLocalRoute = new Zend_Controller_Router_Route(
'/:controller/:action/*',
array(
'module' => 'local',
'controller' => 'index',
'action' => 'index'
)
);
Now when going to http://{hostname}/usa/product/view/id/5, the request goes to the desired location ->
module: 'local',
controller: 'product',
action: 'view',
params: array('id'=>5)