LOS ANGELES (CBSLA.com) — RIP 405 Freeway northbound offramp at Montana Avenue.

That freeway offramp, created in 1956, goes bye-bye Sunday evening.

Meanwhile, all northbound lanes of the freeway will be closed in West Los Angeles after midnight Monday and Tuesday nights, according to Metro officials.

Montana Avenue’s exit, midway between Wilshire and Sunset Boulevards, is being demolished to make way for the roadway’s widening.

The Montana offramp’s official obituary, as written by the Metro public relations team, notes it was “a Los Angeles resident since 1956” and said it was 550 feet long and weighed 718 tons.

Motorists will be able to reach the same area by taking the Wilshire Boulevard westbound ramp, one exit earlier, or the Moraga Drive ramp, two exits later.

When the Sunset Boulevard offramp reopens, drivers will find it does not directly connect to Sepulveda or Montana.

The northbound closures will start at midnight Monday and Tuesday nights, and last until 5 a.m. the following mornings — Tuesday and Wednesday.

They are aimed to give construction workers safe room to work in the median during roadway widening, according to Metro.

On Monday night, northbound lanes will be closed from Santa Monica Boulevard to Wilshire. On Tuesday night, the 405 north will be closed from Wilshire north past Sunset to Moraga, Metro officials said.

Associated ramp closures will begin as early as early as 7 p.m. Monday and Tuesday nights, and freeway lanes will start to disappear at 10 p.m. those nights, according to Metro.

Meanwhile, the new Sunset Boulevard off-ramp from the northbound San Diego Freeway will be reopen by 6 a.m. Monday. That seismically-updated ramp was closed for four months and the reopening will take place one week ahead of schedule, Metro officials said.

The new ramp will allow up to 50 vehicles to line up on the ramp to await a green metering signal, twice as many as the old ramp, officials said.

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