SR 166
Carrying SR 166 over CURTIS CREEK
2 MI E OF CARROLLTON, Carroll, Georgia
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SR 166 in Carroll, Georgia sits above 95% of rated Georgia bridges on inventory load rating (100 t), while its 1977 build year is earlier than 39% of Carroll's recorded-year cohort (168 bridges).
SR 166 in Carroll, Georgia is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1977, 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 GA:000000004500470
INTERSTATE-ERA · CONCRETE · MULTI-SPAN · CULVERT-LED · HEAVY-ADT · HEAVY-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- MULTI-SPAN 2 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: SR 166
The SR 166 bridge in Carroll, Georgia carries SR 166 over CURTIS CREEK. It was built in 1977, making it 49 years old today. It was last reconstructed in 1995, extending its service life. The structure is built primarily of concrete and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 29,400 vehicles, placing it in the heavily-trafficked tier of Georgia 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. None of this bridge's reported major components fall into the Poor condition range.
How SR 166 compares
Age against the county: built in 1977, earlier than 66 of Carroll's 168 bridges with a recorded construction year (39%), against a county median build year of 1976. This is one of the newer structures in its county.
Live comparison across Georgia bridges with a recorded inventory load rating (15,056 of 15,069 rated).
SR 166 vs every rated Georgia bridge
Inventory load rating (metric tons), FHWA NBI, this state
100 Top 5% higher than 95% of 15,056 bridges
rated Georgia 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.
Carroll inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 168 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
- 1977
- Last Reconstructed
- 1995
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 6.4 m (21 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 29,400 vehicles/day
- Structure Number
- 000000004500470
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 SR 166 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 SR 166 against other structures in Carroll and across Georgia. Georgia 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 SR 166?
SR 166 in Carroll, Georgia on the FHWA's 0–9 scale.
How often is SR 166 inspected?
SR 166'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 29,400 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SR 166 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 SR 166?
SR 166 has an NBI inventory load rating of 99.9 metric tons.
Who is responsible for maintaining SR 166?
SR 166 is owned and maintained by State Highway Agency.
How old is SR 166 and does age affect safety?
SR 166 was built in 1977, making it 49 years old and last reconstructed in 1995.
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.