June 23, 2000

Mr. Jim Rummage, PE

Chief District Engineer

District 9

Elizaville Road

P. O. Box 347

Flemingsburg, KY 41041

PCN 980763 CH 961227

Post-construction Review

Dear Mr. Rummage:

A post-construction review on the subject project was held on May 17, 2000 in the District 9 conference room with the following personnel in attendance:

Siamak Shafaghi C. O. Highway Design

Robert Semones C. O. Highway Design

The attendees reviewed the project plans and construction Change Orders. Nine (9) change orders had been issued for this project. The meeting was followed by an on-site investigation of the project area. This meeting dealt with issues pertaining to the removal of the bridge and approaches at the abandoned railroad and Bluestone Road (US60), and reconstruction of the intersection. This meeting also dealt with issues pertaining to Grade, Drain, and Surface for a distance of 0.182 mile. The plans were developed from field survey. The following is an account of the change orders and the reasons for the occurrence.

This change order was initiated by the Department to incorporate project funding codes.

This change order was approved to implement a value engineering proposal by the contractor to change the location of a 36" sewer pipe. It was pointed out that the District Personnel had realized the same savings potential in relocating the pipe in the same manner. However, the representative from the local Utility Company who initially rejected the proposal by the Department subsequently concurred with the contractor’s proposal. This proposal resulted in the net savings of $97,310.00, fifty percent (50%) of which was awarded to the contractor. Please see attached copies of the plans showing the original and proposed locations of the pipe.

Contract time remained unaffected by this change order.

Increase $46,655

This change order was implemented to allow the contractor to subcontract up to seventy percent (70%) of the contract while remaining obligated to appoint a superintendent to be on and in charge of the project at all times.

Contract days were unaffected by this change order.

CHANGE ORDER NO. 4

This change order was issued at the request of the Morehead Utility Plant Board to install 16" Butterfly Valves and 16" Temporary Line Stoppers at tie-in locations for a 16" line water line. This was done in lieu of relocating the 16" water line and to avoid interruption of the water supply to the users. Included in this change order was the relocation of two (2) 1 ½" copper service lines to two (2) houses. The said line was encountered during an investigation of field conditions and had not been identified by the utility company.

Six (6) additional working days were allowed by this change order.

Increase $45,682.23

This change order added Temporary Pavement Markers Type IV A. The pavement markers were required to construct the construction zone diversion in accordance with Standard Drawing TSC-250-04. This item had been inadvertently left out of the plans.

This change order was approved to compensate the contractor for the relocation of an AT&T telephone pole and the associated anchors. It was conjectured that this facility had not been shown or correctly located on the plans.

Contract time remained unaffected by this change order.

Increase $1,440.00

This change order was approved at the request by the Morehead Utility Plant Board to change the proposed plastic casing spacers, used in the construction of the sewer pipe to that of metal.

Contact time was not affected by this change order.

Increase $902.31

This change order was approved to perform Emergency Pavement Milling of mainline US 60, where a precipitous localized settlement had posed a major safety hazard to the travelling public. The milling operation was successful in symptomatic treatment of the settlement and reducing traffic hazards.

One (1) additional working day was allowed by this change order.

Increase $3,025.00

This change order was approved to conduct additional Emergency Pavement repair due to persistent settlement problem with US 60 mainline. Several sudden settlements of considerable magnitude had occurred during the winter months of 1999 which required immediate attention with respect to the safety of traffic. The contractor stockpiled cold mix on the project in order to perform expedient emergency repairs. Several times during the winter months the contractor had to mobilize both labor and equipment on a moment’s notice to repair the roadway.

One (1) additional working day was allowed by this change order.

Increase $3,043.95

The purpose of this project was to improve safety standards by removing the bridge, separating the approaches, and shifting the embankment back, thereby, increasing the sight distance at one end of the bridge. The recurrent settlement areas on US 60 mainline were confined to the area between the piers. The piers which were left in place, were not entirely removed during the bridge removal operations. Sufficient compaction between the piers could not be attained due to the height and the close proximity of the detour to the mainline, and subsequently making it difficult to transport compaction equipment to that area. The spillage of loose earth material during the construction of the detour was also a contributing factor to insufficient compaction at the ground level. The geotechnical investigation of the area indicated the foundation material was of relatively durable shales and stable. However, lack of selective handling of non-durable and durable material could create pockets of weak material and result in settlement and instability problems. Additionally, sudden development of settlements within a matter of hours after a rainfall, could indicate initial moisture deficiency in the fill material—draught conditions of 1999 notwithstanding.

The correction measures discussed were that of Dynamic Compaction, and treatment of the embankment through lateral drilling at various points to inject a special compound capable of expansion and hardening into a mass of high strength and stability.

The attendance of all participants in this post-construction review is greatly appreciated. Please submit any additional comments to this office by July 10, 2000. All comments will be reviewed and disseminated to the appropriate personnel for consideration.

J. M. Yowell, P.E.

State Highway Engineer

JMY:GS:SS

cc: C. Raymer D. Kratt J. Simpson D. Hite R. Divine S. Cornett J. Stone

Encl.