FM 521 over Dead Slough
GoodMatagorda County, Texas · 0.70 MI SW of FM 457 · Structure no. 131580084705013
- Built
- 1956
- 69 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Concrete
- Length
- 90 ft
- 3 main spans
- Daily traffic
- 1,595
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
FM 521 over Dead Slough is a concrete stringer/multi-beam or girder carrying FM 521 over Dead Slough in Matagorda County, Texas. It was built in 1956, so it is 69 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 1,595 vehicles a day, roughly 12% of them trucks, projected to reach 1,722 by 2041. The structure is 90 ft (27.4 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM 521 over Dead Slough built?
It was built in 1956, making it 69 years old in 2025.
What condition is FM 521 over Dead 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 2023.
How much traffic does FM 521 over Dead Slough carry?
About 1,595 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is FM 521 over Dead Slough?
The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.
Who owns FM 521 over Dead Slough?
It is owned by the State Highway Agency.