ST. PETERSBURG, Russia - No automotive majors have cancelled projects in Russia's second-largest city, which is sticking to a plan of spending $12 billion on infrastructure despite the credit crisis, a city official said on Monday.

General Motors Corp , Toyota Motor Corp , Nissan Motor Co , Hyundai Motor Co and Suzuki Motor Corp all have projects at various stages of development in the city, which is sometimes referred to as the Russian Detroit because of its booming automotive industry.

"Not only have we not seen any (car makers) pull out, but on Nov. 6 General Motors will open a new factory. All of our investors are not planning to amend their plans. All of our main projects ... will continue," the deputy governor of St. Petersburg, Mikhail Oseyevsky, told reporters.

The global financial crisis has battered some players on the local automotive and parts markets, with GAZ Group , Russia's second-largest car maker, shutting down assembly lines and saying on Monday it would cut 20 percent of its workforce .

Oseyevsky said that the city is also on track to spend 313 billion roubles (S$18 billion) over the next five years to develop its infrastructure, with the help of investors from the private sector.

"There is still investor interest, and we believe that competition (to participate in these projects) will be fairly stiff," he said.

The city plans to build a freeway for 212 billion roubles that will allow easier truck transport out of its major port. Another large project will build a tunnel for 30 billion roubles under the Neva river which runs through the city.

The concession to develop roads is to be signed by a consortium led by Basic Element, the holding company of billionaire Oleg Deripaska, and including international construction and development firms Strabag AG , Bouygues Travaux Publics , Hochtief PPP Solutions and Egis Projects .

(Reporting by Denis Pinchuk, writing by Simon Shuster; Editing by Rupert Winchester)