what was its use mainly?
It is the only way to access the Covered Bridge Road north of Loyalsock Creek.
Hillsgrove Covered Bridge
Covered Bridge Road north of Loyalsock Creek is accessed only by the Hillsgrove Covered Bridge at the eastern end, and a bridge over Elk Creek at the western end. Sullivan County replaced the bridge over Elk Creek between March 21 and July 21, 1989. Without the Elk Creek bridge, access for five families, a business, and a Little League Baseball camp with 110 children was limited to the covered bridge. County officials noted that despite the covered bridge's posted weight limit of , it could still support , sufficient for small fire trucks and ambulances. In an emergency, larger emergency vehicles could ford the creek if needed. In any case, the limited access did not cause any problems for the four-month period while the Elk Creek bridge was replaced.
what is hillsgrove covered bridge? A Burr arch truss covered bridge in U.S. what was the reason behind its construction? To have a stronger and more rigid structure than other bridges.
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Hillsgrove Covered Bridge [SEP] Use and restoration
In the 19th century the Hillsgrove Covered Bridge survived major floods on March 1, 1865, and June 1, 1889, that destroyed other bridges in the West Branch Susquehanna River valley. Between about 1870 and 1890, logging in the Loyalsock Creek watershed produced lumber rafts that floated beneath the bridge. The bridge was the site of "Uncle Ben's Landing" for lumber rafts, which did not travel at night. These rafts, each containing 5,000–30,000 board feet (11.8–70.8 m³) of lumber, were carried down the Loyalsock to its mouth at Montoursville. The raft era ended when the eastern hemlock were all clearcut. An April, 1963 article on covered bridges in Sullivan and Lycoming counties noted that the Hillsgrove Bridge's deck was "a bit swaybacked", and according to the NBI data, the bridge was "reconstructed" in 1963.