Wooden Vehicle Bridge Design

I'm seeking a skilled engineer to design a wooden bridge over a seasonal creek in Washington State. The bridge will need to support light vehicle traffic. Requirements: - Span 16-20 feet - Durable, weather-resistant... (Budget: $250 - $750 USD, Jobs: Architecture, AutoCAD, Building Architecture, Building Design, Building Regulations, Civil Engineering, Construction, Construction Engineering, Engineering Drawing, Structural Engineering)