Bridge for Monon Greenway in Indiana


The Monon Greenway serves pedestrian and bicycle traffic utilizing an abandoned railroad for recreational purposes.


The Greenway unites the Monon trail between the Indiana cities of Carmel and Westfield and a Pioneer Bridge was used to provide improved safety for users of the trail.


The bridge was needed to provide separation for the Monon pedestrian traffic from the recently reconstructed 146th Street.


The Pioneer steel truss bridge was designed to resemble an older railroad structure that pays homage to the history of the Monon corridor.  The main span over the street incorporates acrylic panels as a safety barrier instead of commonly used wire mesh.


Westfield Mayor Andy Cook said at the grand opening, “The completion of the bridge not only provides a safe crossing across a very busy thoroughfare, but also builds on Westfield’s goal of creating trail connectivity throughout the city and Hamilton County.  The bridge is a great example of local government entities partnering together to provide a valuable resource for residents.”





Different Bridges, Different Paint

While the majority of our steel truss bridges are fabricated from atmospheric corrosion resistant uncoated weathering steel, there are times when a painted finish is desired. For these applications, Pioneer Bridges offers multiple paint systems and a wide range of color options.

 Leesburg-AL (6x40 Expedition)

All Pioneer Bridges are sand blasted prior to receiving any coating.
The sand blasting is done in accordance with Steel Structures Painting Council Surface Preparation Specification (SSPC SPC-6) “Commercial Blast Cleaning”.
The standard paint system used in normal conditions is an epoxy primer followed by an aliphatic urethane gloss enamel topcoat.

 Palm Coast (resized)

In harsher climates, a more elaborate paint system can be utilized.  This system consists of an organic zinc-rich epoxy primer coat which provides the primary corrosion protection for the steel.


The epoxy intermediate coat provides a moisture barrier and adds physical protection to the primer.
The final coat is an aliphatic urethane topcoat that forms an additional moisture barrier with long-term color and gloss retention as well as resistance to “chalking” caused by exposure to sunlight.

 San Leandro - CA (4 - 10x87) - 4

All of our paint systems are applied by experienced painters in our climate controlled painting facility.

San Leandro - CA (4 - 10x87)

Pioneer Bridges has received the Sophisticated Paint Endorsement from the American Institute of Steel Construction quality control program
which ensures that the bridge is painted to the highest standards in the industry.

Weathering Steel

What is Weathering Steel

Weathering steel is a high strength, low alloy steel that was originally developed by United States Steel in the 1930s to resist corrosion and abrasion in their ore wagons. It was given the trade name Cor-ten, and was first used in construction in 1964. Since then the use of weathering steel has spread worldwide and is a popular choice for the use in Pioneer steel truss bridges.

Palm Coast

In suitable environments, weathering steel forms a protective rust “patina” that inhibits further corrosion. The corrosion rate is so low that bridges fabricated from unpainted weathering steel can achieve a 100 year design life with only nominal maintenance.

weathering steel

Benefits of Weathering Steel

• Lower up-front costs:  A weathering steel bridge generally costs about 10% to 15% less than a painted bridge.

• Low maintenance:  Weathering steel is ideal for bridges and other structures where access is difficult or dangerous, and where future disruption needs to be minimized. Inspection and cleaning should be the only maintenance required to ensure the structure continues to perform well.

• Project life cost benefits:  Nominal maintenance needs of weathering steel structures significantly reduce the costs of maintenance operations and the potential indirect costs of traffic delays.

• Construction Speed:  With the elimination of painting in our shop and touch up painting in the field – construction is streamlined.

• Curbside appeal:  The attractive appearance of mature weathering steel often blends in with the environment. Its appearance changes and improves with age.

• Environmental benefits:  Use of weathering steel eliminates the need for VOC laden paints.



Limitations on use

Weathering Steel Bridges are suitable for use in most locations. However, there are certain environments that can lead to durability problems. Weathering steel should not be used in salt-water environments or over brackish water.  Also, de-icing salts should not be used on weathering steel bridges and it not recommended for use in continuous wet/damp conditions.

Guardian Bridge on Rockdale River Trail

The Rockdale River Trail is part of an extensive network of pedestrian trails in the Atlanta area.

When a portion of the trail needed to cross over State Route 212 (Brown’s Mill Road) they called on Pioneer Bridges

to furnish a prefabricated steel truss pedestrian overpass structure.


Guardian style bridge with weathering steel finish, safety mesh, and canopy.

  The Guardian Style bridge includes a safety mesh fencing system and was fabricated from weathering steel to provide a “rustic look”.

This type of finish also provides for a low level of maintenance.

The bridge was also designed with signage to promote the trail and make the structure a “signature” bridge and a easily recognizable landmark for the area.


Rockdale River Trail Bridge is an area landmark.

The overpass bridge is located just west of the Monastery of the Holy Spirit near Conyers, Georgia.

It provides safe passage from the trailhead being constructed near the new visitor’s center.

Many Atlantans have visited the Monastery over the years, touring their gardens and bringing home edibles and bonsai trees purchased from the monks.


Pioneer Bridges’ Guardian Bridge provides safe passage for Rockdale River Trail travelers.

In 2010, the Monastery opened a new $6+million Heritage Center where the public can view the history of this Monastery,

as well as monasticism through the ages, shop in the store, and even grab a bite to eat in the café.

The trailhead at the Monastery should be a popular spot for accessing the trail for years to come.

Rockdale River Trail bio