Bridge conditions in Monmouth County, New Jersey 508 inventoried bridges · 43 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
Monmouth County tracks close to typical: 43 of its 508 inventoried bridges (8.5%) are rated poor, against a national rate of about 7%.
43 of the 508 bridges in Monmouth County, New Jersey, are rated in poor condition (8.5%) in the 2025 National Bridge Inventory, as of August 20, 2026 .171 bridges (33.7%) are rated good and 294 (57.9%) fair.
The median Monmouth County bridge was built in 1972 .
The busiest poor-rated bridge is Old Road (nj 33) over Millstone River (built 1915), carrying about 34,650 vehicles a day.
Good 33.7% · Fair 57.9% · Poor 8.5% of 508 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 Old Road (nj 33) over Millstone River 1915 34,650 Poor Nj 33 over Manalapan Brook 1927 30,910 Poor Nj 35 over Edgar Felix Bike Path 1932 25,211 Poor Nj 35 over N Branch Wreck Pond 1931 24,634 Poor Nj 35 over Nj 71 (union Ave) 1950 24,280 Poor Route 36 over Troutmans Creek 1941 24,061 Poor Nj 18 Southbound over Wayside Road 1979 20,788 Poor Union Hill Road over US 9 1940 18,635 Poor Nj 35 NB over Nj Rt 36NB Ramp G(gsp) 1931 18,017 Poor Nj 71 over Nj Transit 1937 16,148 Poor CR 8A over Navesink River 1939 15,330 Poor Nj 33B over Freehold Sec. Mp 18.35 1925 14,438 Poor Nj Route 34 over Big Brook 1930 12,608 Poor CR 520 over Shrewsbury River 1950 11,230 Poor CR 516(NEW Monmou) over Comptons Creek 1924 10,989 Poor Aberdeen Road over Matawan Creek 1944 9,762 Poor CR12 (hubbard Ave) over Shadow Lake 1945 9,448 Poor CR 54 (phalanx Rd) over Hop Brook 1961 8,038 Poor Brielle Road over Glimmer Glass 1938 7,555 Poor Red Hill Road over North Jersey Coast Line 1922 7,253 Poor CR 524(ALLAIRE Rd) over Wreck Pond Brook 1945 7,239 Poor Taylors Mills Road over Mc Gelliards Brook 1975 6,573 Poor Lakewd-allenwd Rd over Haystack Brook 1944 6,419 Poor Roberts Road over Hop Brook 1959 6,288 Poor Old York Road over Assunpink Creek 1941 5,481 Poor Cr539-old York Rd over New Sharon Brook 1925 5,481 Poor Allenwood Road over Wreck Pond Brook 1915 5,412 Poor Southard Ave CR 21 over Manasquan River 1947 3,682 Poor West Farms Road over Manasquan River 1937 3,173 Poor Perrineville Road over Tributary to Rocky Brook 1900 2,927 Poor Boundary Road over Big Brook 1969 2,795 Poor Green Avenue over Debbies Creek 1943 2,240 Poor Schoolhouse Road over Nj 35 1931 1,551 Poor Lafayette Mills Rd over Branch of Milford Brook 1968 1,546 Poor Corlies Ave over Deal Lake 1941 1,367 Poor Oak Glen Road over Haystack Brook 1946 1,066 Poor Preventorium Road over Manasquan River 1897 949 Poor Baird Road over Millstone River 1955 873 Poor Water Street over Pine Brook 1953 775 Poor Meirs Road over Lahaway Creek 1900 350 Poor Cooper Road over McCLEES CREEK 1951 247 Poor Glendola Road over Wreck Pond Brook 1942 133 Poor Riverdale Ave. over Pine Brook 1931 97 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition Parkway S over Asbury Avenue (CR 16) 1983 86,930 Fair NBI & NBO & Ramps over Luppatcong Creek 1971 86,611 Good Gsp NB over Shark River 1954 77,959 Good Gsp SB over Shark River 1954 77,933 Fair Parkway N over W. Hurley Pond Road 1953 77,755 Fair Gsp NB over Belmar Blvd (CR 18) 1953 77,755 Good Gsp SB over Belamr Blvd (CR 18) 1953 77,429 Fair Parkway S over W. Hurley Pond Road 1953 75,904 Fair Gsp NB over Nj 34 1953 74,299 Fair Gsp NB over Herbertsville Rd (549) 1954 72,835 Good
Source: FHWA National Bridge Inventory , 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of New Jersey: New Jersey bridge conditions by county · every download on the data page .
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected .