FM 521 over Johnsons Timber Slough
GoodMatagorda County, Texas · 0.25 MI W of FM 1095 · Structure no. 131580084603010
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 1,111
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
FM 521 over Johnsons Timber Slough is a concrete culvert carrying FM 521 over Johnsons Timber Slough in Matagorda County, Texas. It was built in 1961, so it is 64 years old, older than the Texas average of 44.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,111 vehicles a day, roughly 13% of them trucks, projected to reach 1,555 by 2042. The structure is 23 ft (7 m) long and 46 ft wide. If it were closed, the detour would be 19.3 mi (31 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM 521 over Johnsons Timber Slough built?
It was built in 1961, making it 64 years old in 2025.
What condition is FM 521 over Johnsons Timber Slough in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.
How much traffic does FM 521 over Johnsons Timber Slough carry?
About 1,111 vehicles per day (2024 count), of which roughly 13% are trucks.
How long is FM 521 over Johnsons Timber Slough?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.
Who owns FM 521 over Johnsons Timber Slough?
It is owned by the State Highway Agency.