US Bridges

FM 643 over Duck Creek

Good

Kent County, Texas · 0.4 MI W of FM 1228 · Structure no. 081320096501004

Built
1989
36 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
182 ft
6 main spans
Daily traffic
49
2024 count
Owner
State
State Highway Agency

About this bridge

FM 643 over Duck Creek is a concrete stringer/multi-beam or girder carrying FM 643 over Duck Creek in Kent County, Texas. It was built in 1989, so it is 36 years old, younger 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 49 vehicles a day, roughly 17% of them trucks, projected to reach 90 by 2033. The structure is 182 ft (55.5 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFM 643
CrossesDuck Creek
Location0.4 MI W of FM 1228
RouteState Highway 643
StateTexas
Coordinates33.35624, -100.70519
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2024)
Projected traffic90 by 2033
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$672,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 643 over Duck Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is FM 643 over Duck 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 May 2023.

How much traffic does FM 643 over Duck Creek carry?

About 49 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is FM 643 over Duck Creek?

The structure is 182 ft (55.5 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns FM 643 over Duck Creek?

It is owned by the State Highway Agency.