BRIDGE 2450 T-397
Carrying BRIDGE 2450 T-397 over OVER HARTHEGIG RUN
LACKAWANNOCK TWP, Mercer, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
BRIDGE 2450 T-397 in Mercer, Pennsylvania sits above 79% of rated Pennsylvania bridges on inventory load rating (47 t), while its 1963 build year is earlier than 71% of Mercer's recorded-year cohort (438 bridges).
BRIDGE 2450 T-397 in Mercer, Pennsylvania is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1963, it carries 1 rated component 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 PA:000000000056667
INTERSTATE-ERA · CONCRETE · SINGLE-SPAN · CULVERT-LED · LOCAL-ADT · HEAVY-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- 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: BRIDGE 2450 T-397
The BRIDGE 2450 T-397 bridge in Mercer, Pennsylvania carries BRIDGE 2450 T-397 over OVER HARTHEGIG RUN. It was built in 1963, making it 63 years old today. The structure is built primarily of concrete and spans 1 section, stretching 7.9 meters (26 feet) end to end. Daily traffic averages 220 vehicles, placing it in the lower-traffic tier of Pennsylvania bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How BRIDGE 2450 T-397 compares
Age against the county: built in 1963, earlier than 310 of Mercer's 438 bridges with a recorded construction year (71%), against a county median build year of 1966. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Pennsylvania bridges with a recorded inventory load rating (23,297 of 23,299 rated).
BRIDGE 2450 T-397 vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
47 Top 21% higher than 79% of 23,297 bridges
rated Pennsylvania 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.
Mercer inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 438 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
- 1963
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 7.9 m (26 ft) 0
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 220 vehicles/day
- Structure Number
- 000000000056667
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
BRIDGE 2450 T-397 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 BRIDGE 2450 T-397 against other structures in Mercer and across Pennsylvania. Pennsylvania 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 BRIDGE 2450 T-397?
BRIDGE 2450 T-397 in Mercer, Pennsylvania on the FHWA's 0–9 scale.
How often is BRIDGE 2450 T-397 inspected?
BRIDGE 2450 T-397'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 220 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BRIDGE 2450 T-397 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 BRIDGE 2450 T-397?
BRIDGE 2450 T-397 has an NBI inventory load rating of 47.2 metric tons.
Who is responsible for maintaining BRIDGE 2450 T-397?
BRIDGE 2450 T-397 is owned and maintained by Town/Township Highway Agency.
How old is BRIDGE 2450 T-397 and does age affect safety?
BRIDGE 2450 T-397 was built in 1963, making it 63 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.