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CEDAR RAPIDS, Iowa — April 9, 2025 — City officials unveiled updated plans for the $123 million replacement of the 8th Avenue Bridge during a public open house Wednesday night, emphasizing the structure’s dual role in improving flood protection and ensuring safe transit over the Cedar River.
The current bridge, opened in 1936, has carried vehicles for nearly 90 years. It now shows signs of serious deterioration. Marc McCoy, who lives next to the bridge, avoids walking across it because of safety concerns. “I don’t feel safe — it’s literally falling apart,” he said.
Rob Davis, the city’s flood control system manager, said most bridges don’t last this long, and the 8th Avenue Bridge has reached the end of its useful life. “We don’t want to replace it the way it is because it really doesn’t serve a flood control component,” he explained.
The new design addresses flood risks head-on. The bridge will be raised about 15 feet higher so it clears the flood protection walls — a critical change after the 2008 flood that devastated parts of Cedar Rapids. It will also feature a single pier in the river, instead of multiple supports, to reduce friction on the water.
“Every one of these bridge piers causes friction in the water. When the water slows down, it goes up. So we’re trying to get the water out and not back up,” Davis said.
The city said the new bridge will also serve as an emergency detour route if the interstate (I-380) must close during a flood event, enhancing overall regional resilience.
The project’s estimated cost has risen from $95 million to $123 million. About half of the funding comes from federal and state sources, with the remainder from local funds. The exact distribution includes $31 million from the Federal Highway Administration’s Bridge Program, $20 million from the Iowa Department of Transportation, and the rest from city flood control bonds and local sales tax revenue.
Residents like McCoy face years of construction noise and disruption. “That construction is going to be basically in our living room,” he said. Still, he acknowledged the project is overdue. “I think they’re doing the right thing.”
Construction is scheduled to begin in spring 2027, with the new bridge built first before the old one is demolished. The total timeline is approximately three years. The city expects to award the construction contract in late 2026.
Beyond immediate safety and flood control, the project is expected to positively influence the city’s flood insurance ratings. The new bridge’s design reduces the risk of water backing up behind the structure, which could lower the base flood elevation for nearby properties. According to a preliminary assessment by the city’s engineering consultant, the updated hydraulics may reduce flood insurance premiums for hundreds of homes in the area.
The open house also featured a detailed environmental review, which found no significant impact on fish habitat or water quality, thanks to the single-pier design and planned erosion control measures. The U.S. Army Corps of Engineers has already issued a preliminary favorable review of the project’s floodplain management plan.
Some residents expressed concern about traffic during construction. The city plans to maintain at least one lane in each direction on the existing bridge while the new bridge is built upstream. After the new bridge opens, the old bridge will be removed, and the road connection will be adjusted.
The 8th Avenue Bridge replacement is part of Cedar Rapids’ larger $750 million flood control system, which includes levees, walls, pump stations, and upstream detention. The bridge component is one of the last major pieces needed to complete the system’s spine.
“This bridge is not just a crossing — it’s a structural element of our flood defense,” Davis said.
The city will hold a second public hearing in June 2025 to address final design details and community feedback. Residents can also submit comments online through the city’s project website.
As Cedar Rapids continues to rebuild from the 2008 flood and prepare for future climate extremes, the 8th Avenue Bridge replacement represents
