BUNKER HILL ROAD
Carrying BUNKER HILL ROAD over HOP RIVER
600 FT EAST OF RTE 6, Unknown County, Connecticut
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
BUNKER HILL ROAD in Unknown County, Connecticut sits above 7% of rated Connecticut bridges on inventory load rating (25 t), while its 1960 build year is earlier than 55% of Unknown County's recorded-year cohort (208 bridges).
BUNKER HILL ROAD in Unknown County, Connecticut is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1960, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 3. 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:04583
INTERSTATE-ERA · STEEL · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 3 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard 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.
Structural health score
A composite of the deck, superstructure, and substructure NBI condition ratings plus the inventory load rating, benchmarked against the full national bridge corpus, distinct from the Good/Fair/Poor category above.
Bridge Snapshot: BUNKER HILL ROAD
The BUNKER HILL ROAD bridge in Unknown County, Connecticut carries BUNKER HILL ROAD over HOP RIVER. It was built in 1960, making it 66 years old today. It was last reconstructed in 1988, extending its service life. The structure is built primarily of steel and spans 3 sections, stretching 17.4 meters (57 feet) end to end. Daily traffic averages 337 vehicles, placing it in the lower-traffic tier of Connecticut bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection places the weakest component in poor condition (see the full component ratings below). At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How BUNKER HILL ROAD compares
Age against the county: built in 1960, earlier than 115 of Unknown County's 208 bridges with a recorded construction year (55%), against a county median build year of 1971. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Connecticut bridges with a recorded inventory load rating (4,365 rated).
BUNKER HILL ROAD vs every rated Connecticut bridge
Inventory load rating (metric tons), FHWA NBI, this state
25 Top 93% higher than 7% 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.
Unknown County inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 208 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
- 1960
- Last Reconstructed
- 1988
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 17.4 m (57 ft) 0
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 337 vehicles/day
- Structure Number
- 04583
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
BUNKER 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 BUNKER 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 BUNKER HILL ROAD?
BUNKER HILL ROAD in Unknown County, Connecticut on the FHWA's 0–9 scale.
How often is BUNKER HILL ROAD inspected?
BUNKER 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 337 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BUNKER 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 BUNKER HILL ROAD?
BUNKER HILL ROAD has an NBI inventory load rating of 25.3 metric tons.
Who is responsible for maintaining BUNKER HILL ROAD?
BUNKER HILL ROAD is owned and maintained by Town/Township Highway Agency.
How old is BUNKER HILL ROAD and does age affect safety?
BUNKER HILL ROAD was built in 1960, making it 66 years old and last reconstructed in 1988.
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.