Delaware's top transportation official said Friday he would have preferred his agency moved more quickly to inspect a major highway bridge that was closed because supporting columns are tilting.
Transportation secretary Shailen Bhatt told The Associated Press, however, that the Interstate 495 bridge in Wilmington was not in danger of imminent collapse.
An engineer working on an unrelated project near the bridge first reported problems with the bridge May 29. Bhatt said senior managers in his agency became aware the next day and ordered an inspection Monday. The bridge was closed immediately.
"We closed the bridge in time. We did not have a failure. That bridge is still standing and nobody has been injured,'' Bhatt said. "I'm happy to accept responsibility for this agency's actions.''
The bridge, which normally carries an average of 90,000 vehicles daily around Wilmington, will be closed indefinitely as engineers figure out how to brace it. Most of the detoured traffic is on already-clogged I-95, which passes through downtown.
The federal government has pledged to pay 90 percent of the cost of permanent repairs and has already approved $2 million in emergency funds. The cost of fixing the bridge hasn't been determined.
Engineers working with Delaware officials suspect that a massive mound of dirt dumped near the bridge, partly on the government's property, might have caused the ground underneath the span to shift and caused four pairs of columns to tilt. The contractor who stored the dirt there is working with the state to remove it.
Dave Charles, the geotechnical engineer who first reported the problem last week, said he returned to the bridge on Tuesday and saw that the columns had shifted even farther. His account suggests the potentially catastrophic problem may have unfolded quickly over a short period of time and raises questions about why transportation officials waited until Monday.
"Would I prefer that somebody had gone out and checked on the bridge on Friday? Absolutely,'' Bhatt said. "But I will not say that we would have closed the bridge any sooner than Monday, simply because we don't know what the condition was.''