FM 1644 over Little Brazos River
FairRobertson County, Texas · 3.9 MI SW of SH 6 · Structure no. 171980156301002
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete
- Length
- 175 ft
- 7 main spans
- Daily traffic
- 399
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FM 1644 over Little Brazos River is a concrete slab carrying FM 1644 over Little Brazos River in Robertson County, Texas. It was built in 1953, so it is 72 years old, older than the Texas average of 44.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 399 vehicles a day, roughly 12% of them trucks, projected to reach 559 by 2042. The structure is 175 ft (53.3 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 FM 1644 over Little Brazos River built?
It was built in 1953, making it 72 years old in 2025.
What condition is FM 1644 over Little Brazos River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.
How much traffic does FM 1644 over Little Brazos River carry?
About 399 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is FM 1644 over Little Brazos River?
The structure is 175 ft (53.3 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.
Who owns FM 1644 over Little Brazos River?
It is owned by the State Highway Agency.