US 231 MP 173.305
Carrying US 231 MP 173.305 over KNIGHTS MILL CREEK
1.8 MI. E. OF TROY, Pike, Alabama
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
US 231 MP 173.305 in Pike, Alabama sits above 94% of rated Alabama bridges on inventory load rating (89 t), while its 1971 build year is earlier than 41% of Pike's recorded-year cohort (169 bridges).
US 231 MP 173.305 in Pike, Alabama is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1971, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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 AL:010548
INTERSTATE-ERA · CONCRETE · LONG-SPAN-RUN · CULVERT-LED · HEAVY-ADT · HEAVY-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- LONG-SPAN-RUN 5 spans
- CULVERT-LED Culvert-led
- HEAVY-ADT Heavy ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: US 231 MP 173.305
The US 231 MP 173.305 bridge in Pike, Alabama carries US 231 MP 173.305 over KNIGHTS MILL CREEK. It was built in 1971, making it 55 years old today. The structure is built primarily of concrete and spans 5 sections, stretching 16.2 meters (53 feet) end to end. Daily traffic averages 18,360 vehicles, placing it in the heavily-trafficked tier of Alabama bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How US 231 MP 173.305 compares
Age against the county: built in 1971, earlier than 70 of Pike's 169 bridges with a recorded construction year (41%), against a county median build year of 1968. This is one of the newer structures in its county.
Live comparison across Alabama bridges with a recorded inventory load rating (16,191 of 16,205 rated).
US 231 MP 173.305 vs every rated Alabama bridge
Inventory load rating (metric tons), FHWA NBI, this state
89 Top 6% higher than 94% of 16,191 bridges
rated Alabama 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.
Pike inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 169 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
- 1971
- Material
- Concrete
- Number of Spans
- 5
- Structure Length
- 16.2 m (53 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 18,360 vehicles/day
- Structure Number
- 010548
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 US 231 MP 173.305 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 US 231 MP 173.305 against other structures in Pike and across Alabama. Alabama 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 US 231 MP 173.305?
US 231 MP 173.305 in Pike, Alabama on the FHWA's 0–9 scale.
How often is US 231 MP 173.305 inspected?
US 231 MP 173.305'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 18,360 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US 231 MP 173.305 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for US 231 MP 173.305?
US 231 MP 173.305 has an NBI inventory load rating of 88.9 metric tons.
Who is responsible for maintaining US 231 MP 173.305?
US 231 MP 173.305 is owned and maintained by State Highway Agency.
How old is US 231 MP 173.305 and does age affect safety?
US 231 MP 173.305 was built in 1971, making it 55 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.