HistoricBridges.org Menu: HistoricBridges.org Menu:


We Recommend These Resources:
Bach Steel - Experts at historic truss bridge restoration.

HistoricBridges.org: Bridge Browser

Daro Road Bridge

Daro Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 26, 2019

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Daro Road (TR-490) Over Huntington Creek
Location
Rural: Luzerne County, Pennsylvania: United States

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
77 Feet (23 Meters)
Structure Length
80 Feet (24 Meters)
Roadway Width
15.4 Feet (4.69 Meters)
Spans
1 Main Span(s)
NBI Number
24412

Historic Significance Rating (HSR)

Bridge Documentation

This is one of a very rare surviving group of Phoenix column pony trusses all in a single county.

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

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 5 panel, 80'-long Pratt pony truss bridge is supported on a stone and a concrete abutment. The pin-connected truss diagonals are rods, with eyebar bottom chords and Phoenix column top chords. Built-up floorbeams and rolled stringers support the timber deck. Pipe railings are fixed to each truss. The bridge has been determined eligible by the PHMC.

The one span, 80'-long, wrought iron, pin-connected, Pratt pony truss bridge was built by Dean & Westbrook using Phoenix sections for the upper chords and inclined end posts and standard design Phoenix Company connecting pieces and bearings along with details that are particular to Dean & Westbrook. The roadway width is 15'-4" and the overall deck width is 16'. This is not a standardized design Pratt pony truss bridge, and it represents Dean & Westbrook’s innovative thinking about features intended to provide a stronger bridge with the most economical use of material. The verticals are composed of angles with lacing. Pin plates are used to make their connection at the cast iron upper chord connecting pieces. The deep, built up floorbeams are framed into the bottom portion of the verticals above the eyebar lower chords. There are punched pin holes in each vertical for the lower panel point connection. Placing floorbeams above the lower chords is not common in Pratt pony truss bridges. A triangle-shaped plate riveted to both ends of each floorbeam accommodates connection of an outrigger that meets the vertical at about its midpoint. The diagonals and counters are bar stock and Dean & Westbrook’s cast open loop head. The bridge is finished with two lines of pipe railings set in their original U shaped brackets and a wood plank deck. It is supported on one stone abutment that has open joints and collapsing wingwalls and one modern concrete abutment. There are minor welded repairs to at least one cast iron connecting piece. Although there is no plaque on the pin connected Pratt pony truss bridge with Phoenix section upper chords and inclined end posts, it has the same distinctive details and design variations as 40 7217 0482 6006 that has a plaque identifying it as built in 1889 by Dean & Westbrook, Engineers and Contractors. Dean & Westbrook were the agents for marketing and building highway bridges for the Phoenix Iron Company. They are also noted for innovative designs, including at least five remaining examples of this one in Luzerne and Montgomery counties and the English Center (Lycoming County) hybrid design placed in 1891. The bridge has high technological significance because of its distinctive details representing the era of experimentation in metal truss bridge design and the use of Phoenix sections, which did as much as any detail to prove the value of metal truss bridges during the last half of the 19th century. The cast- and wrought-iron bridge provides an important snapshot of thinking about bridge design and fabrication prior to steel and standardization. All bridges with Phoenix sections have cultural value. The character-defining features include the truss form and method of truss member end connection (pinned Pratt pony truss) and the floorbeam connection details (floorbeams are above the lower chords, punched pin holes in each vertical for the lower panel point connection), and Phoenix section truss members.

Discussion of Surrounding Area

The single lane bridge carries an unimproved road over a stream in a sparsely developed, forested setting.

The bridge is located on a one lane unimproved road just east of its T intersection with Hunlock-Harveyville Road (SR 4016) in a rural setting with woodlands, active agriculture and scattered houses. The 15'-4" wide bridge roadway is as wide if not wider than the maintained travelway. The bridge and road have a very low reported traffic volume.

Bridge Considered Historic By Survey: Yes


This bridge is tagged with the following special condition(s): Phoenix Columns

Divider

Photo Galleries and Videos: Daro 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

Divider

Maps and Links: Daro Road Bridge

Coordinates (Latitude, Longitude):

View Bridge Location In:

Bridgehunter.com: View listed bridges within a half mile of this bridge.

Bridgehunter.com: View listed bridges within 10 miles of this bridge.

Google Maps

Google Streetview (If Available)

Bing Maps

OpenStreetMap

Apple Maps (Via DuckDuckGo Search)

Apple Maps (Apple devices only)

MapQuest

HERE We Go Maps

ACME Mapper

Waze Map

Android: Open Location In Your Map or GPS App

Flickr Gallery (Find Nearby Photos)

Wikimedia Commons (Find Nearby Photos)

Directions Via Sygic For Android

Directions Via Sygic For iOS and Android Dolphin Browser

USGS National Map (United States Only)

Historical USGS Topo Maps (United States Only)

CalTopo Maps (United States Only)


Divider
 
Home Top

Divider

About - Contact

© Copyright 2003-2020, 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