Bridge conditions in Middlesex County, Connecticut
309 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
13 of the 309 bridges the federal inventory lists in Middlesex County are rated poor; the rest split 100 good and 196 fair.
- 13 of the 309 bridges in Middlesex County, Connecticut, are rated in poor condition (4.2%) in the 2025 National Bridge Inventory, as of .
- 100 bridges (32.4%) are rated good and 196 (63.4%) fair.
- The median Middlesex County bridge was built in 1967.
- The busiest poor-rated bridge is Route 9 over P&w Railroad & Union St (built 1950), carrying about 55,700 vehicles a day.
Good 32.4% · Fair 63.4% · Poor 4.2% of 309 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 |
|---|---|---|---|
| Route 9 over P&w Railroad & Union St | 1950 | 55,700 | Poor |
| Route 66 over Conn River Rte 9 P&w RR | 1938 | 28,000 | Poor |
| Route 9 Northbound over Beaver Meadow Road | 1966 | 14,300 | Poor |
| Route 82 over Connecticut River | 1913 | 9,100 | Poor |
| Route 153 (essex R over Interstate-95 | 1957 | 7,900 | Poor |
| Route 154 over Roaring Brook | 1931 | 3,800 | Poor |
| Route 154 over Back River | 1935 | 3,000 | Poor |
| River Road #1 over Sumner Brook | 1920 | 2,892 | Poor |
| River Road over Falls River | 1954 | 2,677 | Poor |
| Main Street Ext. over Sumner Brook | 1935 | 1,101 | Poor |
| Waterside Lane over Hammock River | 1994 | 510 | Poor |
| Ben Merrill Road over Brook | 2000 | 318 | Poor |
| Country Village La over Brook | 1970 | 102 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate-91 over Falls Brook | 1965 | 108,700 | Good |
| Interstate-91 NB over Mattabesset River | 1965 | 99,500 | Fair |
| Interstate-95 over Cow Hill Road | 1957 | 62,400 | Fair |
| Interstate-95 over Route 9 NB & I-95 Tr 816 | 1992 | 62,200 | Fair |
| Route 9 over Game Area Road | 1968 | 61,300 | Good |
| Interstate-95 over Indian Lake | 1957 | 59,800 | Fair |
| Interstate-95 over Liberty Street No. 1 | 1957 | 59,800 | Good |
| Interstate-91 NB over North Road | 1965 | 58,900 | Fair |
| Interstate-91 SB over North Road | 1965 | 58,900 | Fair |
| Routes 9 & 17 over Sumner Brook | 1953 | 55,700 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Connecticut: Connecticut 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.