Aint No Bridge Builder

I gotta tell ya,
You aint no bridge builder,
You aint strong and you aint sturdy,
When the rain drives down,
You cripple defeated,
And I'll be damned if you get up,

Yet we trust you,
Curious thing that is,
We trust you with our tangible lives,
Permit you to guard our most valuable possessions,
Confident in your strength,
And I'll be damned if you've failed us yet,

I guess you're good for what you do,
That's respectable I suppose,
It's more than I could say for most people,
We just gotta do everything,
Never can quite do just something,
And I'll be damned if I was an any good bridge builder.