Concrete arches along Los Angeles’s iconic Sixth Street Viaduct are rounding into shape as one of Michael Maltzan Architecture’s signature projects nears completion.

The $500 million project offers an update to the original span, which had to be demolished in 2016 owing to concerns related to its ability to withstand earthquakes due to the degradation of concrete in the original 1932 structure. (An arch from that structure was able to be preserved by the city later that year as over 1,000 components were given away in a promotion titled “Rock Day LA”.)

The soon-to-be-completed replacement recently went on display at this year’s Venice Biennale will feature added green space in addition to the pedestrian walkways and the 40-foot high arches, which are now about 50% completed based on photos recently published by the city and Urbanize LA.

The project is set to be completed in the summer of next year after a series of delays pushed the project back by at least 20 months. Concrete pours for the arches had previously led to an extended shutdown of major sections of the 101 Freeway in the spring. Archinect will have more updates as the project approaches its realization.