The county has an elaborate road network system that connects the major towns of Siaya, Bondo, Ugunja, Yala and Ndori. These has led to ease of trade within the county and also opened up the county to other markets.
The County government is keen to improve the road network infrastructure by building access roads within the county through Private-Public partnerships (PPPs) in to ensure that no area in the county is inaccessible by road.
Lake Victoria offers immense potential for water transport between Siaya County and other towns within the East African Community. Infrastructure development in the lake transport has been slow leading to inefficiencies and loss of business. The county government is seeking to construct 2 modern harbors in Usenge and Luanda K’Otieno to facilitate human and goods transportation. This will open up Siaya to markets in Tanzania, Uganda and Kisumu and Homabay Counties in Kenya thus leading to increase in trade.