CO FTBR Crystal Dam (1), East Portal Access Road

THIS IS NOT A REQUEST FOR BID – PLANS AND SPECIFICATIONS ARE NOT AVAILABLE.

PROJECT DETAILS: CO FTBR Crystal Dam(1) East Portal Access Road

The East Portal Access Road is located in Montrose County, Colorado.  The road begins at the intersection with State Highway 347 at the entrance station to the Black Canyon National Park about 6 miles north of US-50. The road continues for 6.85 miles to the northeast where it terminates at the gate to the Crystal Dam facilities road.  The Bureau of Reclamation (BOR) maintains the road for access to its Crystal Dam and Power Plant and to the recreational facilities along the Gunnison River.  The 21-foot wide road was originally constructed in 1973 and has had no major maintenance projects other than a chipseal done in 2015.   The roadway pavement is generally in fair to poor condition. The road has been segmented into three sections based on priority and condition.  The upper section from mileposts 0.0 to 2.2, the middle section from mileposts 2.2 to 5.3 and the lower section from mileposts 5.3 to 6.8.   The middle section is characterized by steep grades of up to 16%, tall rock cuts (with rockfall problems), poor geometrics, and poor pavement conditions.  The focus of the project will be the first 5.3 miles.

The scope of the project would be to pulverize and overlay the pavement 5 miles and reconstruct 0.3 miles.  The major items of work will include paving, rock excavation (blasting) and rock removal (scaling), rockfall protection, cleaning the ditches and culverts, and full depth reclamation and paving.

SIGNIFICANT QUANTITIES:

Schedule A:

• 20401-0000 Roadway Excavation: 14,500 CUYD
• 26001-0000 Rock Bolt: 200 LNFT
• 26002-000 Rock Dowel: 100 LNFT
• 30202-2000 Roadway Aggregate, Method 2: 3,500 TON
• 30401-5500 Full Depth Reclamation, Method 2, 8-Inch Depth: 4.890 Mile
• 40101-5600 Asphalt Concrete Pavement, Gyratory Mix, ½-Inch or ¾-Inch Nominal Maximum Size Aggregate, 0.3 to <3 Million ESAL: 30,000 TON: 11,500 TON
• 623032-0100 Special Labor, Slope Scaling: 150 Hours
• 63401-0300 Pavement Markings, Type B, Solid (White): 110,000 LNFT
• 63401-0300 Pavement Markings, Type B, Solid (Double Yellow): 110,000 LNFT
• 65101-1000 Draped Rockfall Protection, Wire Mesh: 2,250 SQYD
• 65101-2000 Draped Rockfall Protection, Cable Net: 5,000 SQYD

Anticipated Schedule

The anticipated advertisement date is March 2021.  Construction is anticipated from May 2021 to September 2021.

Funding

The estimated cost range is between $4.5 million and $5.5 million.