ROUTE US1 & 9
Carrying ROUTE US1 & 9 over I-195 E-BOUND SPUR
0.9 MI NW OF JCT RTE 5, Unknown County, Maine
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ROUTE US1 & 9
The ROUTE US1 & 9 bridge in Unknown County, Maine carries ROUTE US1 & 9 over I-195 E-BOUND SPUR. It does not have a recorded construction year in the NBI. Daily traffic averages 11,261 vehicles, placing it in the heavily-trafficked tier of Maine bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
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 How the historical reference is calculated.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
- Avg Daily Traffic
- 11,261 vehicles/day
- Structure Number
- 0812
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 ROUTE US1 & 9 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 ROUTE US1 & 9 against other structures in Unknown County 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 ROUTE US1 & 9?
ROUTE US1 & 9 in Unknown County, Maine on the FHWA's 0–9 scale.
How often is ROUTE US1 & 9 inspected?
ROUTE US1 & 9'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 11,261 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ROUTE US1 & 9 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 ROUTE US1 & 9?
An inventory load rating is not recorded for ROUTE US1 & 9.
Who is responsible for maintaining ROUTE US1 & 9?
Ownership is not specified for ROUTE US1 & 9 in the NBI.
How old is ROUTE US1 & 9 and does age affect safety?
The construction year for ROUTE US1 & 9 is not recorded in the NBI.
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.