Indiana Interstate 69 bridge under construction.


Kolb Grading has truly made its mark in the transportation industry, participating in flagship projects used by hundreds of millions of travelers each year.

  • Airports
    Kolb Grading equipment at St. Louis International Airport site.

    Airport construction work requires a significant amount of project coordination and management, as well as team capabilities and skill. Kolb Grading considers the Lambert St. Louis Airport expansion to be one of the top 6 projects ever produced by their firm.

    St. Louis Lambert International Airport - St. Louis, Missouri

    The 2002 St. Louis Lambert Airport expansion created additional runways, access and utility capacity. Kolb led the way by clearing and preparing the 8 million cubic yard site, shoring up the new runway foundations with proper controls using 20,000 ton of rock subgrade stabilization, installing cast and place utility structures, installing security mechanisms on those utility structures and hauling off site debris. Environmental services included seeding and mulching 452 acres and providing erosion control for over 600 acres.

    Serving as General Contractor to the City of St. Louis, Kolb's involvement in the Lambert St. Louis Airport extension encompassed four distinct projects:

    • Grading and paving airport runways 5 and 6
    • Airport north and south temporary bypass (Lindbergh Boulevard)
    • Storm & sanitary sewer cast in place structures
    • Lindbergh Boulevard tunnel backfill
    Tasks included in the Lambert project:
    • Site clearing and grubbing
    • Unsuitable dirt and existing pavement removal and haul
    • Excavation
    • Demolition
    • Rock grade subgrade stabilization
    • Erosion control
    • Sanitary sewer installation
    • 55’ storm sewer cast in place structure
    • Security grate installation on utility structures
    • Security training and employee badging
    • Grading and paving
    • Seeding and sodding

    Coral Creek Airport - Placida, Florida

    The Coral Creek airport expansion included relocating gopher turtles, clearing trees and brush, erosion control measures, grading 200,000 cubic yards of sand and making base out of coral rock saving two million dollars in imported materials. One challenge was that the existing runway had to stay operable during the entire construction phase. The new 1 mile runway project included lighting and striping the tarmac.

  • Highways
    Jeff Kolb discussing Arkansas Route 71 plan.

    Kolb has a lengthy history of successful highway construction projects. The company resume includes multiple projects for the Missouri Department of Transportation, including a Hwy 5 lane expansion in Camden County, MO (Lake of the Ozarks), Route 67 outside of Poplar Bluff, MO, and a joint venture constructing Highway 364 in St. Charles County. Moving beyond their home state, Kolb was awarded multiple-project work on I-69 in Indiana and US Routes 71 and 72 as part of the Bella Vista Bypass project in Arkansas.

    Indiana I-69

    The Interstate 69 highway project in Indiana was a complex, significant undertaking requiring plenty of advanced planning, technical know-how, the ability to manage Indiana-based personnel and the ability to manage construction while remaining stewards of the environment. The site was located in southwest Indiana, an area containing multiple karst features and waters of the United States. This required strict water quality management and conservation. The contract required Kolb to perform stage D construction in an effort to preserve wildlife habitat for animals or native protected species with included American bald eagles, Indiana bats and snails.

    • Site clearing, grubbing and chipping 200 acres
    • Unsuitable removal and stabilization 40 feet deep
    • Box culverts and piping
    • Building embankment (10 million cubic yards of unclassified excavation; processing materials to a 4 inch minus; 110 foot fills)
    • Processing and segregating shale, sandstone, limestone and fat clay
    • 465,000 square yards of high strength geo-textile
    • 1.1 million linear feet of wick drains
    • Stabilized 600,000 cubic yards of embankment
    • On-site aggregate manufacturing of 200,000 tons
    • Stabilization of sub-grades
    • Erosion control
    • Rip-rap and rock placement
    • Bridgework including 2500 foot long by 80 foot tall substructure
    • 90 foot piles oriented in 30 foot by 60 foot footings
    • All bridgework performed in floodplain surrounded by environmental "Do Not Disturb" wetland restrictions
    • Wildlife preservation

    Missouri Page Avenue Extension

    The Page Avenue Extension project was a collaboration between MoDOT, St. Charles County and local municipalities who teamed together to fund a 10-mile divided highway — also known as Highway 364 — between Interstate 270 in Maryland Heights and Highway 40 (Interstate 64) in Lake Saint Louis. Facets of this multi-decade project included constructing a highway through Creve Coeur park, relocating a lake, bridge construction, utility relocations, design and construction.

    MoDOT used a Design-Build contracting process to have contractor teams compete to win the contracts. The Missouri Highways and Transportation Commission approved the contract on February 6, 2013, awarding the project to the Page Constructors Joint Venture, which included Fred Weber Inc. and Millstone-Bangert Inc (now known as Millstone Weber) along with Kolb Grading and lead designer, Parsons Transportation Group.

  • Railroads
    The new addition to the Indiana Railroad at Bear Run Lead Mine in Dugger, Indiana.

    Clearing, excavating, stabilizing and grading railroad track beds, along with embankment construction and stabilization, are all within Kolb Grading’s experienced wheelhouse.

    Meramec Power Plant Rail Loop

    Ameren UE selected Kolb Grading to build a rail loop around its Meramec Power Plant facility. The scope of the project included:

    • Importing 150,000 ton of shot rock
    • Build and stabilize a rail loop through ash ponds
    • Stabilize the rail floor subgrade up to 20 feet in depth
    • Move 250,000 cubic yards of processed ash for embankments
    • Sealing the embankments with a clay liner

    Bear Run Lead Track

    The Indiana Railroad Co. hired Kolb Grading as general contractor to perform multiple tasks at the Bear Run Lead Mine in Duggar, Indiana.

    • 800,000 cubic yards of excavation
    • Clearing and grubbing 100 acres
    • 30,500 tons place and compact shot rock
    • Corrugated steel pipe installation
    • Track removal and stockpiling
    • Conspan Bridge installation
    • Access road and fencing
    • Used mine waste to create the rail road, followed by capping of the waste
    • Utilized lime stabilization
  • Bridges & Tunnels
    • Installation of utility bridge at Sycamore Valley Lake.
    • Construction of the Indiana I-69 project.
    • Kolb Grading working at Lambert St. Louis Airport
    • Lindbergh Boulevard under a new tunnel at Lambert St. Louis International airport.

    Whether to support road construction or water-based utility projects, the team at Kolb Grading has a significant amount of time, project experience and stories to tell when it comes to bridges and tunnels. They have been built to provide access to trucks to haul contaminants without using public roads; provided a major thoroughfare for traffic under the runways at St. Louis Lambert Airport and provided safe crossing through a storm water runoff.

    Indiana I-69

    Kolb not only excavated and graded the site for a new bridge on I-69, it installed a 2500 foot long, 80 foot tall substructure with 90 foot pilings oriented in 30 foot by 60 foot footings. All of the work done on this project was performed in floodplain surrounded by environmental "Do Not Disturb" wetland restricted areas home to blue line streams and snails.

    Page Avenue Extension Bridges

    The Page Constructors joint venture, including Kolb Grading, excavated and prepared sites for cast in place structures creating nine overpasses, including the Hwy 364 bridge over Hwy K in St. Charles County, Missouri. This Single Point Urban Interchange (SPUI) structure is a controlled traffic flow bridge.

    Weldon Spring Remediation

    Built two tunnels to haul contaminants from the site without using public roads, and these structures are now part of a public access park / bike / running path

    Lindbergh Boulevard Tunnel (St. Louis Airport)

    Awarded the North/South Bypass project on Lindbergh Ave during airport construction. This project included backfilling a half-mile long cast in place tunnel using geotextiles, Type 1 and Type 4 crushed stone and lime stabilized soil.

    Sycamore Valley Bridge and Spillway

    For a private owner, Kolb Grading extended a four acre lake to a 90 acre lake. Aspects of the project included building a new dam and spillway, installed a 48 foot arched pre-cast concrete bridge/spillway, adding shotcrete for stabilization and spillway construction.