Nfa A634 over RR Grade RD / Doe River
PoorCarter County, Tennessee · N of SR 37-E of SR173 JCT · Structure no. 100A6340001
- Built
- 1889
- 136 years old
- Condition
- Poor
- inspected July 2023
- Type
- Truss - Thru
- Steel
- Length
- 111 ft
- 1 main span
- Daily traffic
- 50
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A634 over RR Grade RD / Doe River is a steel truss - thru carrying Nfa A634 over RR Grade RD / Doe River in Carter County, Tennessee. It was built in 1889, so it is 136 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 80 by 2041. The structure is 111 ft (33.8 m) long and 10 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A634 over RR Grade RD / Doe River built?
It was built in 1889, making it 136 years old in 2025.
What condition is Nfa A634 over RR Grade RD / Doe River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.
How much traffic does Nfa A634 over RR Grade RD / Doe River carry?
About 50 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A634 over RR Grade RD / Doe River?
The structure is 111 ft (33.8 m) long with a longest span of 106 ft (32.2 m) and a deck 10 ft wide.
Who owns Nfa A634 over RR Grade RD / Doe River?
It is owned by the County Highway Agency.