HistoricBridges.org Menu: HistoricBridges.org Menu:


We Recommend These Resources:
Bach Steel - Experts at historic truss bridge restoration.
Historic Bridge Finder App: Find Nearby Bridges

HistoricBridges.org: Bridge Browser

Bennett Road Bridge

Bennett Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 12, 2012

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Bennett Road (TR-129) Over Whetstone Creek
Location
Rural: Morrow County, Ohio: United States
Construction Date and Builder / Engineer
1887 By Builder/Contractor: Mount Vernon Bridge Company of Mount Vernon, Ohio

Technical Facts

Rehabilitation Date
1969
Main Span Length
84 Feet (25.6 Meters)
Structure Length
85 Feet (25.91 Meters)
Roadway Width
13.8 Feet (4.21 Meters)
Spans
1 Main Span(s)
NBI Number
5931614

Historic Significance Rating (HSR)

Bridge Documentation

This bridge no longer exists!

Bridge Status: Demolished and replaced.

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge is a rare surviving example of a pre-1900 bridge built by the Mt. Vernon Bridge Company. This company became prolific in the 20th Century in fabricating parts for bridges, including large bridges. However, very few example survive from this company's early years as an 19th Century bridge builder. The bridge's most unusual detail is the complete lack of sway bracing or struts. Only lateral bracing is used. Rather than using tension rods for the lateral bracing, heavier angle is used and is bolted to the truss, likely a requirement of the extra work the lateral bracing must do without any struts. The bridge also has unusual hip verticals, which ends at the bottom chord with two loops, rather than one as found in typical eyebars. This design is commonly found on bridges built by the Wrought Iron Bridge Company, but is a detail that the Mt. Vernon Bridge Company used on more than one bridge as well.

Despite the significant number of historic truss bridges remaining in Morrow County (as of 2012), this bridge stands out as one of the most unusual, unique, and significant bridges in Morrow County.

HistoricBridges.org was absolutely aghast to find that this bridge was found Ineligible for the National Register of Historic Places in 2009 by the state's Historic Bridge Inventory. Firstly, HistoricBridges.org's position is that any pin-connected through truss that has fair or better historic integrity should be considered eligible, given their rarity, both in the state and nationwide. No state retains a population of pin-connected through trusses great enough to justify writing off such bridges as non-historic. However, most disturbing is the fact that the Historic Bridge Inventory does not consider the unusual prong-like detail for the hip verticals as noteworthy. Further, the bizarre fact that this bridge was built with absolutely no struts or sway bracing of any kind, and relies only on lateral bracing is completely ignored by the inventory! While the Morse Bridge Company built some bridges with this detail, the lack of struts or sway bracing on through trusses in the 19th Century is otherwise unheard of, and it is the only known example of the Mt. Vernon Bridge Company to display this detail. Furthermore, the inventory fails to acknowledge the rarity of pre-1900 Mt. Vernon Bridge Company bridges. These bridges are essential to document the history of a bridge company that seems to have been more prolific in the 20th Century.

Information and Findings From Ohio's Historic Bridge Inventory

Setting/Context

The bridge carries a 1 lane rural road over a stream in a rural area of active farms. The bridge is on a vertical crest.

Physical Description

The 1 span, 85'-long, pin-connected Pratt thru truss bridge is supported on one ashlar abutment and one stone abutment. The trusses are traditionally composed with built-up compression members and eyebar tension members. The same prong-like connection used by the Wrought Iron Bridge Co. is used for the end panel floorbeam connections. Field splices were completed using bolts. The previously closed bridge was repaired by OBC in 2000.

Integrity

Impact damage. Severe section loss.

Summary of Significance

The pin connected thru truss bridge is one of at least two fabricated by the Mount Vernon Bridge Co. and erected in the county in 1887. The company was established in 1880. Despite its age and the documented work of an in-state fabricator, the bridge has no innovative or distinctive details save for the floorbeam hangers, but that detail it not unique to the fabricator. The truss members are heavily rusted. This example, while pre-1890, is not historically or technologically significant. Pratt trusses were undoubtedly the most popular truss design of the last quarter of the 19th century and continued to be built into the 20th century, although eventually superseded in popularity by Warren trusses. The design, which initially was a combination of wood compression and iron tension members, was patented in 1844 by Thomas & Caleb Pratt. The great advantage of the Pratt over other designs was the relative ease of calculating the distribution of stresses. More significantly, it translated well into an all-metal design in lengths of less than 200'. Post-1890 Pratt trusses show a progression toward less variation in their details such that by 1900 the design was quite formulaic with few significant differences between the designs of various builders. In Ohio, there are 185 Pratt trusses dating from ca. 1874 to 1945 with at least 140 dating prior to 1900 (Phase 1A, 2008).

Bridge Considered Historic By Survey: No

Divider

Photo Galleries and Videos: Bennett Road Bridge

 
View Photo Gallery
Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Video
Eastbound Crossing
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

View Maps
and Links

Divider
 
Home Top

Divider

About - Contact

© Copyright 2003-2019, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners and users of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.

Divider