CASTONGUAY RD
Carrying CASTONGUAY RD over VIOLETTE BROOK
1.1 MI NW JCT US 1, Aroostook, Maine
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
CASTONGUAY RD in Aroostook, Maine sits above 91% of rated Maine bridges on inventory load rating (63 t), while its 1958 build year is earlier than 68% of Aroostook's recorded-year cohort (229 bridges).
CASTONGUAY RD in Aroostook, Maine is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1958, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 2. 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 ME:5309
INTERSTATE-ERA · STEEL · SINGLE-SPAN · CULVERT-LED · LOCAL-ADT · HEAVY-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-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: CASTONGUAY RD
The CASTONGUAY RD bridge in Aroostook, Maine carries CASTONGUAY RD over VIOLETTE BROOK. It was built in 1958, making it 68 years old today. The structure is built primarily of steel and spans 1 section, stretching 8.2 meters (27 feet) end to end. Daily traffic averages 380 vehicles, placing it in the lower-traffic tier of Maine bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 2/9. The weakest component sits in critical 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 CASTONGUAY RD compares
Age against the county: built in 1958, earlier than 155 of Aroostook's 229 bridges with a recorded construction year (68%), against a county median build year of 1967. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Maine bridges with a recorded inventory load rating (2,518 rated).
CASTONGUAY RD vs every rated Maine bridge
Inventory load rating (metric tons), FHWA NBI, this state
63 Top 9% higher than 91% of 2,518 bridges
rated Maine 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.
Aroostook inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 229 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
- 1958
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 8.2 m (27 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 380 vehicles/day
- Structure Number
- 5309
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
CASTONGUAY RD 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 CASTONGUAY RD against other structures in Aroostook and across Maine. Maine 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 CASTONGUAY RD?
CASTONGUAY RD in Aroostook, Maine on the FHWA's 0–9 scale.
How often is CASTONGUAY RD inspected?
CASTONGUAY RD'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 380 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CASTONGUAY RD 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 CASTONGUAY RD?
CASTONGUAY RD has an NBI inventory load rating of 62.9 metric tons.
Who is responsible for maintaining CASTONGUAY RD?
CASTONGUAY RD is owned and maintained by State Highway Agency.
How old is CASTONGUAY RD and does age affect safety?
CASTONGUAY RD was built in 1958, making it 68 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.