This is an archived article that was published on sltrib.com in 2017, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Washington • Long-term U.S. mortgage rates rose this week, marking new highs for the year. An increase in a key interest rate is expected by the Federal Reserve next week, propelled by signs of strength in the economy.

Mortgage buyer Freddie Mac says the rate on 30-year, fixed-rate loans climbed to 4.21 percent from 4.10 percent last week. The benchmark rate stood at 3.68 percent a year ago and averaged 3.65 percent through 2016, the lowest level in records dating to 1971.

The rate on 15-year mortgages increased to 3.42 percent from 3.32 percent last week.