It has been shown that a cellular automaton is useful to simulate traffic flow. Kashii Sando in Fukuoka City is known as a notoriously busy road that approaches a shrine. Therefore, we focus on the road and introduce a cellular automaton model to simulate the bottleneck situation due to a railroad crossing. We introduce parameters such as traffic volume, initial traffic volume, and car stop time in front of the crossing. We show that a traffic jam is considerably affected by the time that cars are stopped at the railroad crossing.