New steel Grove Street CTA viaduct starting to be assembled on Grove just east of tracks and old brown concrete viaduct at right in background
New viaduct with Rotary International Headquarters and crane
Worker guiding important triangular brace between large side beam and bottom cross-beam, into place
Stack of many new cross-beams under old Grove CTA contrete viaduct
Workers bolting cross-beams and triangular braces together from elevated platforms
Many more cross-beams in place with long narrow X beams at bottom