T-454 CARRARA RD
Carrying T-454 CARRARA RD over GLADE RUN
0.25 MI From SR 1010 INT, Butler, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
T-454 CARRARA RD in Butler, Pennsylvania sits above 4% of rated Pennsylvania bridges on inventory load rating (15 t), while its 1927 build year is earlier than 88% of Butler's recorded-year cohort (378 bridges).
T-454 CARRARA RD in Butler, Pennsylvania is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1927, it carries 2 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 PA:000000000008166
PRE-1950 · CONCRETE · SINGLE-SPAN · SUPER-LED · LOCAL-ADT · LIGHT-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- LOCAL-ADT Local ADT
- LIGHT-LOAD Light 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: T-454 CARRARA RD
The T-454 CARRARA RD bridge in Butler, Pennsylvania carries T-454 CARRARA RD over GLADE RUN. It was built in 1927, making it 99 years old today. The structure is built primarily of concrete and spans 1 section, stretching 11.3 meters (37 feet) end to end. Daily traffic averages 100 vehicles, placing it in the lower-traffic tier of Pennsylvania bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How T-454 CARRARA RD compares
Age against the county: built in 1927, earlier than 331 of Butler's 378 bridges with a recorded construction year (88%), against a county median build year of 1974. 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).
T-454 CARRARA RD vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
15 Top 96% higher than 4% 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.
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.
Butler inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 378 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
- 1927
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 11.3 m (37 ft)
- Deck Width
- 7.5 m (25 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 100 vehicles/day
- Structure Number
- 000000000008166
Condition Analysis
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
T-454 CARRARA 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 T-454 CARRARA RD against other structures in Butler 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 T-454 CARRARA RD?
T-454 CARRARA RD in Butler, Pennsylvania, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is T-454 CARRARA RD inspected?
T-454 CARRARA 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 100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. T-454 CARRARA 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 T-454 CARRARA RD?
T-454 CARRARA RD has an NBI inventory load rating of 14.5 metric tons.
Who is responsible for maintaining T-454 CARRARA RD?
T-454 CARRARA RD is owned and maintained by County Highway Agency.
How old is T-454 CARRARA RD and does age affect safety?
T-454 CARRARA RD was built in 1927, making it 99 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.