Hillsgrove Covered Bridge | |
|---|---|
 Hillsgrove Covered Bridge over Loyalsock Creek after restoration in 2012 (top), with flood damage in 2011 (middle), and before restoration in 2008 (bottom) | |
| Coordinates | 41°27′39″N 76°40′15″W / 41.46083°N 76.67083°W[1] |
| Carries | TR 357 |
| Crosses | Loyalsock Creek |
| Locale | Sullivan, Pennsylvania, United States |
| Official name | Hillsgrove Covered Bridge |
| Other name(s) | Rinkers Covered Bridge |
| Named for | Hillsgrove Township |
| Maintained by | Sullivan County |
| NBI Number | 567207035700040[2] |
| Characteristics | |
| Design | National Register of Historic Places |
| Total length | 186 ft (57 m)[2] |
| Width | 18.0 ft (5.5 m)[3] |
| Height | 8.0 ft (2.4 m) |
| Load limit | 3 tons (2.7 t) |
| History | |
| Constructed by | Sadler Rodgers |
| Built | c. 1850 |
| MPS | Covered Bridges of Bradford, Sullivan and Lycoming Counties TR |
| NRHP reference No. | 73001666 |
| Added to NRHP | July 2, 1973 |
| Location | |
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The Hillsgrove Covered Bridge is a Burr arch truss covered bridge over Loyalsock Creek in Hillsgrove Township, Sullivan County, in the U.S. state of Pennsylvania. It was built c. 1850 and is 186 feet (56.7 m) long. In 1973, it became the first covered bridge in the county to be placed on the National Register of Historic Places (NRHP). The bridge is named for the township and nearby unincorporated village of Hillsgrove, and is also known as Rinkers Covered Bridge for an adjoining farm.
Pennsylvania had the first covered bridge in the United States, and has had the most such bridges since the 19th century. They were a transition between stone and metal bridges, with the roof and sides protecting the wooden structure from the weather. The Hillsgrove bridge has load-bearing Burr arches sandwiching multiple vertical king posts on each side, for strength and rigidity. It was built by Sadler Rodgers, who also constructed the nearby Forksville Covered Bridge in the same year, with a similar design.
The Hillsgrove bridge is the longest of three covered bridges remaining in Sullivan County, and served as a landing site for lumber rafts on the creek between 1870 and 1890. Nineteenth-century regulations restricting speed, number of animals, and fire are still posted on the bridge. Restoration work was carried out in 1963, 1968, 2010, and again in 2012 after serious flood damage. The bridge is still in use, with average daily traffic of 54 vehicles in 2012. Despite these restorations, it had a "structurally deficient" rating in the 2012 National Bridge Inventory, with a 16.5 percent structural sufficiency rating.[2][a]
- ^ "United States Geological Survey, Hillsgrove (PA) Topographic Map". Acme Mapper. Retrieved 2015-01-04.
- ^ a b c Federal Highway Administration (2012). "State: PA; Place Name: Hillsgrove (Township of); County: Sullivan; NBI Structure Number: 000000000032115". Nationalbridges.com (Alexander Svirsky). Archived from the original on 2016-03-04. Retrieved 2015-01-04. Note: this is a formatted scrape of the 2012 official website, which can be found here for Pennsylvania: "PA12.txt". Federal Highway Administration. 2012. Retrieved 2015-01-04.. The 2006 NBI for Pennsylvania is here PA06.txt
- ^ "Pennsylvania Cultural Resources Geographic Information System". Pennsylvania Historical and Museum Commission and Pennsylvania Department of Transportation. Archived from the original (Searchable database) on 2007-07-21. Retrieved 2011-01-12. Note: This includes Susan M. Zacher, Pennsylvania Historical and Museum Commission. "National Register of Historic Places Inventory Nomination Form: Hillsgrove Covered Bridge" (PDF). Archived from the original (PDF) on 2022-02-23. Retrieved 2015-01-04. Also note: This incorrectly identifies the bridge as being in Elkland Township.