National Geographic : 1964 Apr
HS EKTACHROME(ABOVE) AND KODACHROMESBY DAVID 5. BOYER, NATIONALGEOGRAPHIlCSTAFF N.,S. Sparks fly as welders cut away a steel bulkhead separating two sections of tunnel. of miles, even if they'd been cars. For boats, it's terrific punishment. When something goes wrong, and it usually does, they patch us up and get us going again." The helicopter passed over Chesapeake Tunnel to Trestle C, then on to the high span across North Channel, an arch of steel laid by the American Bridge Division of U. S. Steel Corporation to accommodate the menhaden fishermen. As I took in the whole complex in minutes, I remembered the way an engineer had characterized it. "It isn't only a question of building a bridge over the water," he said. "We're building this bridge on the water, in the water, and through the water." In another sense, the bridge-tunnel was built on and over the air. Invisible spider 610 webs of radio lines connected all those ma chines and boats and trestles and islands. I had ridden the boats and knew how the radio calls went: "Diana to the Slab-setter. Give me a guess on when you'll want the next bargeload of slabs. You'll have to work all night again tonight. I've got those two cases of Cokes for you aboard." "Monster to TRK. We need a boat. Hinton got dropped in the water with the concrete bucket. It knocked him out. Callahan jumped in after him. We've got 'em fished out. But Hinton should get to a doctor." "S & P-Two to Trestle B. We'll come in under you in 20 minutes to pick up concrete samples. Have 'em ready." And not one radio system going, but four.