US Bridges

FM 1644 over Sandy Creek

Good

Robertson County, Texas · 2.1 MI NE of SH 6 · Structure no. 171980233701001

Built
1967
58 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
655
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1644 over Sandy Creek is a concrete culvert carrying FM 1644 over Sandy Creek in Robertson County, Texas. It was built in 1967, so it is 58 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 655 vehicles a day, roughly 10% of them trucks, projected to reach 720 by 2033. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 1644
CrossesSandy Creek
Location2.1 MI NE of SH 6
RouteState Highway 1644
StateTexas
Coordinates30.9944, -96.6452
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic655 (2023)
Projected traffic720 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1644 over Sandy Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM 1644 over Sandy Creek 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 1644 over Sandy Creek carry?

About 655 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FM 1644 over Sandy Creek?

The structure is 31 ft (9.5 m) long with a longest span of 10 ft (3 m).

Who owns FM 1644 over Sandy Creek?

It is owned by the State Highway Agency.