NEW ROCK HILL ROAD
Carrying NEW ROCK HILL ROAD over INTERSTATE-91
1.77 SOUTH OF ROUTE 68, Unknown County, Connecticut
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
NEW ROCK HILL ROAD in Unknown County, Connecticut sits above 58% of rated Connecticut bridges on inventory load rating (43 t), while its 1965 build year is earlier than 42% of Unknown County's recorded-year cohort (893 bridges).
NEW ROCK HILL ROAD in Unknown County, Connecticut is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1965, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CT:03130
INTERSTATE-ERA · STEEL · MULTI-SPAN · SUPER-LED · LOCAL-ADT · HEAVY-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 3 spans
- SUPER-LED Superstructure-led
- LOCAL-ADT Local ADT
- HEAVY-LOAD Heavy load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: NEW ROCK HILL ROAD
The NEW ROCK HILL ROAD bridge in Unknown County, Connecticut carries NEW ROCK HILL ROAD over INTERSTATE-91. It was built in 1965, making it 61 years old today. The structure is built primarily of steel and spans 3 sections, stretching 87.7 meters (288 feet) end to end. Daily traffic averages 950 vehicles, placing it in the lower-traffic 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 4/9, substructure at 6/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How NEW ROCK HILL ROAD compares
Age against the county: built in 1965, earlier than 375 of Unknown County's 893 bridges with a recorded construction year (42%), against a county median build year of 1965.
Live comparison across Connecticut bridges with a recorded inventory load rating (4,365 rated).
NEW ROCK HILL ROAD vs every rated Connecticut bridge
Inventory load rating (metric tons), FHWA NBI, this state
43 Top 42% higher than 58% of 4,365 bridges
rated Connecticut bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Unknown County inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 893 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1965
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 87.7 m (288 ft)
- Deck Width
- 12.1 m (40 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 950 vehicles/day
- Structure Number
- 03130
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
NEW ROCK HILL ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare NEW ROCK HILL ROAD against other structures in Unknown County 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 NEW ROCK HILL ROAD?
NEW ROCK HILL ROAD in Unknown County, Connecticut has a deck rating of 7/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is NEW ROCK HILL ROAD inspected?
NEW ROCK HILL ROAD'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 950 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NEW ROCK HILL ROAD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for NEW ROCK HILL ROAD?
NEW ROCK HILL ROAD has an NBI inventory load rating of 43.4 metric tons.
Who is responsible for maintaining NEW ROCK HILL ROAD?
NEW ROCK HILL ROAD is owned and maintained by State Highway Agency.
How old is NEW ROCK HILL ROAD and does age affect safety?
NEW ROCK HILL ROAD 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.