Article says 1700lf and looks about 4ft wide, so that’s 6800ft of bridge deck. At $2.8M that would mean they spent $412/sf of deck. Where I live, the state DOT spends about $150/sf of bridge deck for traffic rated bridges. I’ve gotten prices for prefab ped bridges as low as $110 delivered (still have to pay a half-dozen guys for labor and the cost of a crane to place).

I guess there were some special construction challenges, but $415/sf is hardly a bargain for a bridge at first blush.

That may be low in some places where capital improvement costs are basically just graft.