HUMPHREY STREET
Carrying HUMPHREY STREET over MILL RIVER
0.1 MI E OF I-91, Unknown County, Connecticut
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
HUMPHREY STREET in Unknown County, Connecticut sits above 51% of rated Connecticut bridges on inventory load rating (40 t), while its 1908 build year is earlier than 97% of Unknown County's recorded-year cohort (893 bridges).
HUMPHREY STREET in Unknown County, Connecticut is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1908, 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:03813
PRE-1950 · PRESTRESS · MULTI-SPAN · SUB-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- SUB-LED Substructure-led
- ARTERIAL-ADT Arterial 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: HUMPHREY STREET
The HUMPHREY STREET bridge in Unknown County, Connecticut carries HUMPHREY STREET over MILL RIVER. It was built in 1908, making it 118 years old today. It was last reconstructed in 1973, extending its service life. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 25.9 meters (85 feet) end to end. Daily traffic averages 4,100 vehicles, placing it in the moderately-trafficked tier of Connecticut bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 7/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How HUMPHREY STREET compares
Age against the county: built in 1908, earlier than 863 of Unknown County's 893 bridges with a recorded construction year (97%), against a county median build year of 1965. 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).
HUMPHREY STREET vs every rated Connecticut bridge
Inventory load rating (metric tons), FHWA NBI, this state
40 Top 49% higher than 51% 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
- 1908
- Last Reconstructed
- 1973
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 25.9 m (85 ft)
- Deck Width
- 18.4 m (60 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 4,100 vehicles/day
- Structure Number
- 03813
Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
HUMPHREY STREET 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 HUMPHREY STREET 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 HUMPHREY STREET?
HUMPHREY STREET in Unknown County, Connecticut has a deck rating of 6/9, superstructure rating of 7/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is HUMPHREY STREET inspected?
HUMPHREY STREET'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 4,100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HUMPHREY STREET 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 HUMPHREY STREET?
HUMPHREY STREET has an NBI inventory load rating of 40.2 metric tons.
Who is responsible for maintaining HUMPHREY STREET?
HUMPHREY STREET is owned and maintained by City/Municipal Highway Agency.
How old is HUMPHREY STREET and does age affect safety?
HUMPHREY STREET was built in 1908, making it 118 years old and last reconstructed in 1973.
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.