Heavy-Duty Railcar Bridge Construction

I need a specialized bridge designed and constructed for heavy railcars crossing over a river or waterway. The bridge must be robust and durable enough to support the weight and movement of heavy railcars.

Key Requirements:
- Heavy-duty bridge design and construction
- Spanning a river or waterway
- Material: Railcars (specific material requirements to be determined)
- Compliance with safety and engineering standards

Ideal Skills and Experience:
- Civil or structural engineering background
- Experience in designing bridges for heavy loads
- Proficiency with railcar specifications and requirements
- Knowledge of waterway construction regulations
- Strong project management skills to ensure timely delivery within budget

Please provide relevant experience and any preliminary design ideas.