April 2014 Construction Update

L-B09(2)—73-97, Corrugated Metal Pipe Replacement of existing bridge number B219 on Lenox Avenue, Letting date: June 5, 2013. Bid price: $66,744.00. Contractor: L. A. Carlson Contracting. The Board awarded the project on June 4th. Project work has been completed and the road opened to traffic on December 10, 2103. Seeding and erosion control work starts the week of April 21st. Project completion is expected early Spring 2014.

L-B(X9)—73-97, 280th Street Bridge east of Taylor Avenue: Replacement of failed greenwood structure and bridge with a new twin 8’x8’ reinforced concrete box culvert. Letting date: September 24, 2013. Bid price: $172,744.00. Contractor: Dixon Construction. Culvert work and the road rebuild has been completed and the project opened to traffic on December 2, 2013. Seeding for the embankment remains and this work will be done in Spring 2014.

STP-S-CO97(110)—5E-97, HMA Overlay Project on County Road K45, Old Highway 75 from the south city limits of Sergeant Bluff to the intersection of K45 and D51 (Luton Pavement). Letting date: February 18, 2014. Bid price: $764,253.46. Contractor: Knife River Construction. The project consists of placing a 3” HMA overlay on the existing HMA pavement. All contracts are signed and contracts have been approved by Iowa DOT. The project is funded with MPO funds matched by the county farm to market fund. Late start date for the project is September 8, 2014.

STP-S-CO97(121)—5E-97, PCC Inlay Project on County Road D51from Port Neal Road to the Interstate 29 interchange. Letting date: February 18, 2014. Bid price: $1,261,371.36. Contractor: C. J. Moyna & Sons, Inc. The project will consist of removal of the existing pavement, crushing the old pavement and placing it as road base, then placing a new 10” PCC pavement on the road grade. The county project is funded with MPO funds matching by the RISE funds awarded for the CF Industries project. The Iowa DOT is providing construction management and inspection to coordinate our pavement replacement project with the interchange work. A preconstruction meeting was held on April 17. Work is scheduled to start on the interchange the week of May 9, 2014. The two south ramps are scheduled to close the week of July 25, 2014. Work on the county road and closure of the north ramps is scheduled for the week of October 3, 2014, with paving of the county road to take until around November 17, 2014. The schedule is subject to change, this being the contractor’s best estimate at this time. All work at the interchange is scheduled to be completed in mid-December 2014.

RCX-CO97(119)—9B-97, CF Industries Plant Road-grading for paving of the plant access road. Letting date: April 29, 2014. The project plans are completed and road easements needed for the project have been obtained. The project is funded with RISE funds awarded for the CF Industries project and will be matched by local funds. Smithland Riprap Project, Left Bank of the Little Sioux River: Contractor: Clark Construction. Bid Price: $129,000. The County awarded bids for riprap reinforcement of the left bank of the Little Sioux River last year. This project is complete.

255th Street Railroad Crossing-Signal Improvements: Work being performed by Union Pacific Railroad. Project estimated cost: $209,400. This project involves the installation of warning lights and gates at the railroad crossing on 255th Street near the old Tannery Building. The project is one phase of the RISE funded road improvements to accommodate traffic growth in the area. The railroad completed the installation on April 11, 2014.

L-B(K199)—73-97, Michigan Avenue Bridge Replacement: Letting date: April 29, 2014. Project is going out for bids. Precast deck sections are complete, paid for, and awaiting delivery to the contractor. Completion is expected by Fall 2014.

L-B(M184)—73-97, Pocahontas Avenue Bridge Replacement: Letting date: To be determined. Project is in final design. The Corps of Engineers permit has been received.

L-B(H-109)—73-97, 185th Street Bridge Replacement: Letting date: To be determined. Project is in final design. The Corps of Engineers permit has been received.

County Maintenance Activities:

District 5 staff, with the assistance of employees from districts 2 and 4 has been constructing pullouts on 235th Street, 225th Street and Allison Avenue to provide some maneuvering room for wide loads on the haul routes. The roads seem to be improving in regard to the spring thaw, but I am still hesitant to do heavy blading on the roads as we are still finding frost in other roads around the county. Dust treatment will be reapplied after we reshape the road surfaces. It is hoped that this is the last time the road will have to be treated this calendar year.

District 3 has been working on a snow trap removal on Kossuth Avenue north of D38.

All districts are continuing to work on roads with many roads showing the effects of spring thaw.