RT9 NB& I-91 TR821
Carrying RT9 NB& I-91 TR821 over I-91 NB & I-91 TR823
.23 MI SO OF JCT I-91 SB, Middlesex, Connecticut
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: RT9 NB& I-91 TR821
The RT9 NB& I-91 TR821 bridge in Middlesex, Connecticut carries RT9 NB& I-91 TR821 over I-91 NB & I-91 TR823. It was built in 1965, making it 61 years old today. The structure is built primarily of steel continuous. Daily traffic averages 58,000 vehicles, placing it in the heavily-trafficked tier of Connecticut bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. No reported major component scores in the Poor range under the current federal condition thresholds.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How RT9 NB& I-91 TR821 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 How the historical reference is calculated.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
- 1965
- Material
- Steel Continuous
- Avg Daily Traffic
- 58,000 vehicles/day
- Structure Number
- 03156
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether RT9 NB& I-91 TR821 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 RT9 NB& I-91 TR821 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 RT9 NB& I-91 TR821?
RT9 NB& I-91 TR821 in Middlesex, Connecticut on the FHWA's 0–9 scale.
How often is RT9 NB& I-91 TR821 inspected?
RT9 NB& I-91 TR821'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 58,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. RT9 NB& I-91 TR821 is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for RT9 NB& I-91 TR821?
An inventory load rating is not recorded for RT9 NB& I-91 TR821.
Who is responsible for maintaining RT9 NB& I-91 TR821?
Ownership is not specified for RT9 NB& I-91 TR821 in the NBI.
How old is RT9 NB& I-91 TR821 and does age affect safety?
RT9 NB& I-91 TR821 was built in 1965, making it 61 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.