The northern part of Greenland is the closest you can get to the North Pole on land. About 150 km.
As extreme north as Thule is, equally extreme the weather is. Low temperatures, hurricanes, sudden weather changes, etc.
These were the challenges Adserballe & Knudsen faced when they were called upon to construct a new bridge for the US Air Force Thule Base. The old bridge had been swept away by violent streams of melting water following a sudden change in temperature in the area. The melting water had flushed away the important bridge.
The bridge was delivered on time in accordance with the contract in spite of all the challenges working in the Arctic.
The deck of the bridge, 61 meters long and eight meter wide (200 by 26 feet) was constructed with 250 cubic meter of oak. Concrete foundations were dug five meters (16 feet) down into the perma frozen underground and cast with 250 cubic meter of concrete.
The US Air Force is known as a very demanding buyer. Based on price, experience, the environmental profile, and the quality of work, Adserballe & Knudsen won the contract to construct the new and more solid bridge.