US Bridges

FM 1644 over Tidewell Creek

Fair

Robertson County, Texas · 0.9 MI SW of SH 6 · Structure no. 171980156301001

Built
1953
72 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
50 ft
2 main spans
Daily traffic
457
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1644 over Tidewell Creek is a concrete slab carrying FM 1644 over Tidewell Creek 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 457 vehicles a day, roughly 12% of them trucks, projected to reach 640 by 2042. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 1644
CrossesTidewell Creek
Location0.9 MI SW of SH 6
RouteState Highway 1644
CountyRobertson County
StateTexas
Coordinates30.96896, -96.68476
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic457 (2023)
Projected traffic640 by 2042
Trucks12%
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 Tidewell Creek built?

It was built in 1953, making it 72 years old in 2025.

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

About 457 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is FM 1644 over Tidewell Creek?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 1644 over Tidewell Creek?

It is owned by the State Highway Agency.