From 1448 until 1480, the bridge instead of the bows had a wooden strut frame. Then the stone arches were installed. Originally built fortified tower with a drawbridge.<br>in 1815, it was extensively repaired the bridge and probably also the tower and the bridge. 1841/1842 the Lahn was made navigable in Runkel, a lock was built, for the directions built the 4 loops on the right bank.<br><br>Information by Heidi Zahir:<br>the bridge was completed in 1448. The exact start of construction is not known. 1984 showed one on the oak stake a pillar instrument dendrochronologisches opinion, that the last measured tree-ring dates from the year 1368. The case of oak is between 1379 and in 1405. 40 Years are likely to have been between cases and installation according to former practice around. Vof and developed during the construction of the bridge itself saw a bloody feud with the inhabitants of other nearby castle, which feel threatened by the bridge. "" On the 27 July 1447, the adversaries closed a comparison, which meant the Castle inhabitants "...sollen are the bridges use to eternal days..." 
 The construction of the bridge-schiefriger green scarf stone - is typical of the River Valley. The stones are probably from a nearby quarry.