NFA A345
Carrying NFA A345 over SALT LICK CRK
IN RED BOILING SPRINGS, Macon, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NFA A345
The NFA A345 bridge in Macon, Tennessee carries NFA A345 over SALT LICK CRK. It was built in 1950, making it 76 years old today. It was last reconstructed in 2006, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 9.1 meters (30 feet) end to end. Daily traffic averages 180 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 4/9, substructure at 6/9. 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. Its NBI inventory load rating is 4.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NFA A345 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 How the historical reference is calculated.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
- 1950
- Last Reconstructed
- 2006
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 9.1 m (30 ft)
- Deck Width
- 6.1 m (20 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 180 vehicles/day
- Structure Number
- 560A3450001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
How to read this record
NFA A345 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 A345 against other structures in Macon 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 A345?
NFA A345 in Macon, Tennessee has a deck rating of 5/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is NFA A345 inspected?
NFA A345'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 180 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NFA A345 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 A345?
NFA A345 has an NBI inventory load rating of 4.9 metric tons.
Who is responsible for maintaining NFA A345?
NFA A345 is owned and maintained by City/Municipal Highway Agency.
How old is NFA A345 and does age affect safety?
NFA A345 was built in 1950, making it 76 years old and last reconstructed in 2006.
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.