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Bridge conditions in Middlesex County, New Jersey

563 inventoried bridges · 24 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Middlesex County tracks close to typical: 24 of its 563 inventoried bridges (4.3%) are rated poor, against a national rate of about 7%.

24 of the 563 bridges in Middlesex County, New Jersey, are rated in poor condition (4.3%) in the 2025 National Bridge Inventory, as of August 20, 2026.
130 bridges (23.1%) are rated good and 409 (72.6%) fair.
The median Middlesex County bridge was built in 1972.
The busiest poor-rated bridge is US 1 over Forrestal Road (built 1932), carrying about 93,321 vehicles a day.

Good 23.1% · Fair 72.6% · Poor 4.3% of 563 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
US 1 over Forrestal Road	1932	93,321	Poor
US 130 over Ridge Road (CR 522)	1941	38,155	Poor
US Rt 130 over Conrail Jamesburg Br	1941	37,178	Poor
Cranbury Rd (535) over New Jersey 18	1963	22,324	Poor
Landing Lane (609) over Delaware & Raritan Canal	1920	22,262	Poor
Oak Tree Rd CR 604 over Lehigh Valley Line	1931	18,708	Poor
Adams Lane (CR608) over Amtrak NE Corridor	1955	17,850	Poor
Bridge St (CR 669) over Amtrak NE Corridor	1932	16,708	Poor
Milltown Road over Nj 18	1963	16,163	Poor
Smith St (CR 656) over North Jersey Coast Line	1925	15,793	Poor
State Street CR611 over Chemical Coast Branch	1941	15,469	Poor
Old Bridge Tpke over Sayreville Secondary	1920	15,010	Poor
Park Ave (CR 531) over Lehigh Valley Main Line	1933	14,333	Poor
Washington St over Amboy Secondary	1910	12,651	Poor
Market St (CR 658) over North Jersey Coast Line	1927	10,963	Poor
Main St. (CR 684) over Conrail(abandoned)	1909	8,450	Poor
Fayette Street over North Jersey Coast Line	1928	6,947	Poor
New Dover Road over S.branch of Rahway River	1977	6,909	Poor
Plainsboro Road over Devils Brook	1979	5,615	Poor
Bordentown Avenue over North Jersey Coast Line	1953	5,467	Poor
Old Cranbury Rd over Millstone River	1982	2,761	Poor
Cutters Dock Road over North Jersey Coast Line	1927	374	Poor
Water Works Road over Deep Run	1927	13	Poor
E.h. Werner Gen St over Nj Transit & Main St.	1929	1	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Tpknso/nsi/sni/sno over Colonial Pipelines	1947	196,710	Good
Garden St Parkway over S Br Rahway River	1948	194,231	Fair
Washington Ave over I-287	1962	190,050	Fair
Nj Turnpike(i-95) over Mill Brook	1950	175,389	Fair
Nj Turnpike(i-95) over Mill Brook	1950	175,376	Fair
Nj Turnpike(i-95) over Mill Brook	1950	175,376	Fair
Tpknso/nsi/sni/sno over Mill Brook Branch	1950	171,920	Fair
Gsp over US Route 1	1948	168,525	Fair
Cranbury S Riverrd over Cedar Brook	1983	155,106	Fair
I-287 over Raritan R D&r Easton Ave	1959	132,640	Fair

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.