Work on U.S. 36 should be wrapping up, with all three southeast bound lanes and a temporary bike path re-opening Oct. 3. Crews have been working to repair the Boulder Turnpike after the Denver-bound …
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Work on U.S. 36 should be wrapping up, with all three southeast bound lanes and a temporary bike path re-opening Oct. 3.
Crews have been working to repair the Boulder Turnpike after the Denver-bound lanes began failing mid-July between the Broomfield and Church Ranch Boulevard exits.
Denver-bound traffic has been rerouted into the northbound lanes, creating a bottleneck in both directions on the highway while crews worked to repair the damage from sinkhole that formed in the road.
Road crews were scheduled to close all southeast bound lanes on U.S. 36 between Broomfield Church Ranch Boulevard overnight Oct. 1 and 2 while the road was re-striped with new lane lines. Two of the southeast-bound lanes were scheduled to reopen on Oct. 2 with all three traffic lanes reopening Oct. 3.
All lanes northwest bound lanes, which have taken detoured south bound traffic, would reopen as well.
A temporary bike path will be located near the active construction zone, so bicyclists should exercise caution while riding through this area. The far right lane of eastbound US 36 in this area will have a narrow shoulder and a concrete barrier and the temporary bike path will be directly to the right of that barrier. Bicyclists should expect the bike path to close occasionally through November as crews can continue working.
Transportation department officials noticed cracks on the pavement on Thursday July 12 and began monitoring them. By the following Friday, the cracks and widened enough close all but one lane of the road between Wadsworth Boulevard and Church Ranch Boulevard.
The cracks continued to widen over the weekend, leading the department to close the southeastern-bound road completely.
To repair the road, crews sank more than 100 concrete caissons, or pillars, under the road and down to the bedrock as support for the road. Soil under the road was replaced with geofoam blocks a light weight polystyrene material designed to reduce pressure on the soil under bridge and road suports.
A concrete slab was placed over the geofoam to distribute the weight evenly and a road base of was placed on top of that, followed by a concrete pavement driving surface.
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