Load capacity on steel arch

How much load will a 2"x6"" steel tubing arch carry. The width is 60'. And the height in center is 20 feet. Need to support 2feet of width at top dead center
of arch.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.