Yellowstone National Park is asking for additional public input on a change to the recently approved plan to reconstruct Isa Lake Bridge located at Craig Pass on the Continental Divide. Reconstruction of the bridge, which spans Isa Lake atop Craig Pass, is intended to bring the structure up to current design standards, improve safety, increase vehicle load capacity and preserve the historic integrity of the bridge. Park Spokesman Al Nash explains that initially, it had been planned to build a temporary bridge so that the road over the lake would remain open to visitor traffic. However, as the project progressed, designers identified potentially significant savings in time, money and resource impacts if the road were instead closed during a portion of the reconstruction. Under the revised plan Nash says the Park would close the Isa Lake Bridge on September second and it would not open to visitor travel until June 11th. That means the road would be closed earlier in the fall and opened later in the spring. In the meantime, a temporary bridge would be provided for snowmobiles and snow coaches through the winter. Nash adds that if this proposed change is implemented and the road is closed, fewer trees would be cut down, the construction schedule would be shortened by a full year, and up to $1/2-million would be saved. Comments on the proposal may be made online during the next 30 days.