ROUTE 9 NORTHBOUND
Carrying ROUTE 9 NORTHBOUND over MATTABESSET RIVER
1.5 MI SOUTH OF ROUTE 72, Middlesex, Connecticut
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ROUTE 9 NORTHBOUND
The ROUTE 9 NORTHBOUND bridge in Middlesex, Connecticut carries ROUTE 9 NORTHBOUND over MATTABESSET RIVER. It was built in 1988, making it 38 years old today. The structure is built primarily of steel and spans 1 section, stretching 44.9 meters (147 feet) end to end. Daily traffic averages 32,900 vehicles, placing it in the heavily-trafficked tier of Connecticut bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 69.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ROUTE 9 NORTHBOUND compares
Live comparison across Connecticut.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1988
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 44.9 m (147 ft)
- Deck Width
- 13.4 m (44 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 32,900 vehicles/day
- Structure Number
- 05797
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether ROUTE 9 NORTHBOUND is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare ROUTE 9 NORTHBOUND against other structures in Middlesex and across Connecticut. Connecticut bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for ROUTE 9 NORTHBOUND?
ROUTE 9 NORTHBOUND in Middlesex, Connecticut has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is ROUTE 9 NORTHBOUND inspected?
ROUTE 9 NORTHBOUND's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 32,900 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ROUTE 9 NORTHBOUND is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for ROUTE 9 NORTHBOUND?
ROUTE 9 NORTHBOUND has an NBI inventory load rating of 69.8 metric tons.
Who is responsible for maintaining ROUTE 9 NORTHBOUND?
ROUTE 9 NORTHBOUND is owned and maintained by State Highway Agency.
How old is ROUTE 9 NORTHBOUND and does age affect safety?
ROUTE 9 NORTHBOUND was built in 1988, making it 38 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.