US Bridges

FM 1731 over Frio Draw

Good

Parmer County, Texas · 0.2 MI S of FM 2013 · Structure no. 051850163404001

Built
1952
73 years old
Condition
Good
inspected August 2023
Type
Culvert
Steel
Length
37 ft
3 main spans
Daily traffic
142
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1731 over Frio Draw is a steel culvert carrying FM 1731 over Frio Draw in Parmer County, Texas. It was built in 1952, so it is 73 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 142 vehicles a day, roughly 20% of them trucks, projected to reach 160 by 2033. The structure is 37 ft (11.3 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesFM 1731
CrossesFrio Draw
Location0.2 MI S of FM 2013
RouteState Highway 1731
StateTexas
Coordinates34.63894, -102.89719
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span11 ft (3.4 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic142 (2020)
Projected traffic160 by 2033
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 1731 over Frio Draw built?

It was built in 1952, making it 73 years old in 2025.

What condition is FM 1731 over Frio Draw 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 August 2023.

How much traffic does FM 1731 over Frio Draw carry?

About 142 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is FM 1731 over Frio Draw?

The structure is 37 ft (11.3 m) long with a longest span of 11 ft (3.4 m) and a deck 27 ft wide.

Who owns FM 1731 over Frio Draw?

It is owned by the State Highway Agency.