And the box tie member at the I-40 bridge is a built-up section.

I-40 大桥的箱形系杆是一个组合截面。

Put simply and clearly, there is absolutely no excuse for this crack to have sat open on the bridge's tie member for as long as it did.

简单明了地说，这条裂缝在桥的系杆件上张开这么久，绝对没有任何借口。