Bethlehem Boulevard was brought into the state highway system as MD 158 around 1991 concurrent with MD 157 being assigned to the Peninsula Expressway south of Bear Creek. Between 1995 and 1999, I-695 was transformed from a two-lane freeway on a viaduct to a four-lane surface-level freeway between Edgemere and the Key Bridge. As part of the project, MD 158 was reconstructed. Most of the state highway was reduced to two lanes and relocated parallel to I-695 instead of passing under the Interstate Highway. In addition, all four of MD 158's interchanges were removed. Westbound MD 158 at its interchange with MD 157 became a collector-distributor lane for westbound I-695's interchange with MD 157.