If you're doing the Marlboro questions, you're barking up the wrong tree..er..bridge. You'll need to do a little more homework with your rivers and their bridges!
a structure for crossing a river that starts with the letter "B" is a bridge!
The Severn River Crossing
Kalama Railroad Ferry Crossing the Columbia River - 1903 was released on: USA: March 1903
London Bridge
There is a bridge called the Qasr el nile bridge
Columbia River Bar
In London, crossing the River Thames.
to solve the river crossing problem
Crossing the River Thames in London. It also houses a museum relating to the bridge.
The Columbia River navigation channel begins at the Columbia River bar and continues five miles upriver at a depth of 55 feet and a width of 2,640 feet. After which, it maintains a depth of 40 feet and a width of 600 feet for 100 miles to the Portland Harbor. The channel passes under the Astoria Bridge, with a vertical clearance of 208 feet and a horizontal clearance of 1070 feet, and the Longview Bridge, with vertical and horizontal clearances of 198 feet and 1085 feet, respectively.However, the 40' deep Columbia River navigation channel is only a small part of the Columbia River that is dredged out to accommodate ocean going ships traveling in and out of the Port of Portland (OR). The river itself varies considerably in width between Oregon and Washington from typically 1 mile wide to 14 miles wide at the mouth at Astoria. Here are the widths of narrowest parts in various sections which are the various crossing of the Columbia River:Astoria-Megler Bridge: 14 milesLewis and Clark Bridge: 2,722 feetVancouver-Portland Bridge: 3,538 feetBonneville Lock and Dam: 2,690 feetBridge of the Gods: 1,856 feetHood River Bridge: 4,418 feetThe Dalles Bridge: 3,339 feetBiggs Rapids Bridge: 2,567 feetJohn Day Dam: 7,635 feetUmatilla Bridge: 3,433 feetMcNary Dam: 7,365 feet
The East River .
It's the Royal Gorge Bridge over the Arkansas River.