<P> At dangerous or difficult river crossings , ferries or toll bridges were set up and bad places on the trail were either repaired or bypassed . Several toll roads were constructed . Gradually the trail became easier with the average trip ( as recorded in numerous diaries ) dropping from about 160 days in 1849 to 140 days 10 years later . </P>
how long did it take pioneers on the oregon trail
about 160 days in 1849 to 140 days 10 years later