NFA A393
Carrying NFA A393 over HOLLOW ROCK BRANCH
IN CITY OF HOLLOW ROCK, Carroll, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NFA A393
The NFA A393 bridge in Carroll, Tennessee carries NFA A393 over HOLLOW ROCK BRANCH. It was built in 1970, making it 56 years old today. It was last reconstructed in 1998, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 11.3 meters (37 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Tennessee bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 6/9, substructure at 3/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 2.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NFA A393 compares
Live comparison across Tennessee.
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 How the historical reference is calculated.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
- Year Built
- 1970
- Last Reconstructed
- 1998
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 11.3 m (37 ft)
- Deck Width
- 3.7 m (12 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 20 vehicles/day
- Structure Number
- 090A3930001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in poor condition (3/9), showing advanced deterioration that may require priority repair.
How to read this record
NFA A393 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 NFA A393 against other structures in Carroll and across Tennessee. Tennessee 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 NFA A393?
NFA A393 in Carroll, Tennessee has a deck rating of 5/9, superstructure rating of 6/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is NFA A393 inspected?
NFA A393'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 20 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NFA A393 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 NFA A393?
NFA A393 has an NBI inventory load rating of 2.9 metric tons.
Who is responsible for maintaining NFA A393?
NFA A393 is owned and maintained by City/Municipal Highway Agency.
How old is NFA A393 and does age affect safety?
NFA A393 was built in 1970, making it 56 years old and last reconstructed in 1998.
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.