Rich Bradley

(Rachel Lippmann/St. Louis Public Radio)

When a 20-inch steam pipe buried 15 feet under the streets of St. Louis burst two weeks ago, most people focused on the potential health hazards in what was blown skyward.

But the blast got St. Louis Public Radio’s Rachel Lippmann thinking - what’s under the streets that we don’t know about until it’s revealed?

This is what she found out.

(via Twitter/St. Louis Board of Public Service)

St. Louis city officials say the new viaduct that will carry Grand Blvd. over the railroad tracks in Midtown won't open to limited travel until the middle of June.

Crews had been hoping to open one lane of traffic in each direction by mid-May, says city Board of Public Service president Rich Bradley. But construction crews encountered poor soil conditions and a water line when they began digging.

"You dig in the ground in the Mill Creek Valley there, you can find just about anything," Bradley said.

(Rachel Lippmann/St. Louis Public Radio)

Improved traffic flow and safer conditions for pedestrians who use the Grand Blvd. bridge are two of the benefits of the 15-month closure that will start at 5am on Monday, March 14th.

The 52-year-old crossing is structurally deficient, and in danger of being closed permanently, says the city's chief engineer, Rich Bradley.