Bridge conditions in Butler County, Pennsylvania 374 inventoried bridges · 51 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
About one in 7 bridges in Butler County is rated in poor condition: 51 of 374 on the federal inventory, one of the higher shares in Pennsylvania.
51 of the 374 bridges in Butler County, Pennsylvania, are rated in poor condition (13.6%) in the 2025 National Bridge Inventory, as of August 20, 2026 .111 bridges (29.7%) are rated good and 212 (56.7%) fair.
The median Butler County bridge was built in 1978 .
The busiest poor-rated bridge is SR3022 over Brush Creek (built 1965), carrying about 16,565 vehicles a day.
Good 29.7% · Fair 56.7% · Poor 13.6% of 374 bridges
Bridges rated poor Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
Bridge Built Vehicles/day Condition SR3022 over Brush Creek 1965 16,565 Poor SR 0422 Eb&wb over Trib to Muddy Creek 1949 13,364 Poor SR0008 over Muddy Creek 1942 10,376 Poor SR3018 over I-79 Nb/sb & Tr Brush CR 1970 10,286 Poor SR0068 over B&le B&p Rrs;connoque CR 1937 9,259 Poor South Monroe St. over Connoquenessing CR 1970 6,900 Poor SR3007 over Connoquenessing Creek 1970 5,863 Poor SR2012 over Thorn Creek 1942 4,448 Poor SR2004 over Bonnie Brook 1951 1,727 Poor SR0528 over Lake Arthur 1969 1,245 Poor SR4010 over Mcdonald Run 1939 1,194 Poor SR3014 over Breakneck Creek 1933 1,157 Poor SR0268 over North Branch Bear Creek 1925 847 Poor T-846 Marwood Road over Little Buffalo Creek 1988 800 Poor SR0138 over B&le Railroad 1947 739 Poor SR0528 over Lit Connoquenessing CR 1940 647 Poor SR1010 over Glade Run 1955 523 Poor T-841 Kiester Road over Long Run 1990 500 Poor T-840 Mcgrady Holl over Little Buffalo Run 1923 450 Poor SR4004 over Wolf Creek 1944 438 Poor T-840 Victory Road over Davis Run 1952 300 Poor T-584 Geibel Rd over Bonnie Brook 1907 300 Poor West Jefferson Rd over Thorn Creek 1915 300 Poor SR 2011 over Lardintown Run 1910 263 Poor T-411 Ash Stop Rd. over Connoquenessing Creek 1902 250 Poor T-301 Powell Road over Pa Tpk (I-76) 1952 200 Poor T-691 Mcshane Rd over Little Buffalo Run 1907 200 Poor T-556 Great Belt over Trib to Thorn Creek 1957 200 Poor Twp Rd 841 over B&le Railroad 1927 200 Poor T-383 Jones Road over Anderson Run 1936 200 Poor T-487 Woodland Rd over Thorn Creek 1979 200 Poor T-372 Taggart Rd over Slippery Rock Creek 1980 150 Poor SR3042 (t-357) over SR0079 SB 1963 148 Poor SR4014 over N Br Slippery Rock CR 1912 101 Poor T-454 Carrara Rd over Glade Run 1927 100 Poor T-416 Pipestem Rd over Findlay Run 1936 100 Poor T-578 Shuler Road over Little Buffalo Run 1915 100 Poor T-631 Dalmagro Rd over Trib. Little Buffalo Run 1915 100 Poor T-631 Dalmagro Rd over Little Buffalo Run 1913 100 Poor T-431 Whitestown over Littl Connoquenessing CR 1916 100 Poor T-360 Needle Point over Connoquenessing CR 1990 100 Poor T-348 Book Road over Muddy Creek 1925 100 Poor T-603 Saint Joe Rd over Bonnie Brook 1915 100 Poor Mayer Road over Hogue Run 1930 100 Poor T-626 Spiker Road over Rough Run 1978 100 Poor T-439 Watson Rd over N Br Slippery Rock Creek 1900 50 Poor Parker Street over Bear Creek 1935 50 Poor Heaven Lane over S Fork Lit Scrubgrass CR 1912 50 Poor Main Street over B&p Railroad 1916 50 Poor T-570 Old Rte 422 over Little Buffalo Run 1938 50 Poor T-638 Snake Rd over Silver Creek 2004 50 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition I-79 SR8079 SR9479 over Trib to Brush Creek 1969 76,555 Fair SR0019 Nb&sb over Coal Run 1952 43,366 Fair SR 0228 EB & WB over I-79 Nb&sb & SR9479 2000 42,813 Good SR0019 Nb&sb over Pa Turnpike Ramp R 2004 34,726 Good SR0079 Nb&sb over Little Yellow Creek 1963 29,865 Fair SR0079 Nb&sb over Black Run 1964 29,114 Fair Pa Tpk (I-76) over Trib. to Brush Creek 1952 27,341 Fair SR0019 Nb&sb over Glade Run 1951 25,811 Fair SR 0079 SB over T-969 Ehrman Rd 1968 23,966 Fair SR 0079 SB over T-311 N Boundary Road 2019 23,966 Good
Source: FHWA National Bridge Inventory , 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected .