The lanes were closed about 5:45 a.m., the patrol reported. The eastbound I-44 on-ramp from Northwest Expressway was closed about 7:30 a.m.
A trooper was called to a report of debris on the Belle Isle bridge about 5:30 a.m.
The trooper was able to use a flashlight to see that steel parts of the expansion joint had risen in the
“It's not something we can just do a quick patch on,” Randolph said. “It's going to take a little bit, so we ask for motorists to be patient with us.”
Transportation Department spokeswoman Mills Gotcher said she could not speculate on the cause of the problem, but she said expansion joints often are affected by extreme temperature. About 7:30 a.m., Gotcher said workers attributed the problem to the age of the bridge and not the extreme heat alone. The bridge was built in 1975.