US Bridges

FM 156 over Flat Draw

Good

Denton County, Texas · 0.60 MI N of US 380 · Structure no. 180610071801002

Built
1947
78 years old, rebuilt 2015
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
34 ft
5 main spans
Daily traffic
7,857
2023 count
Owner
State
State Highway Agency

About this bridge

FM 156 over Flat Draw is a concrete culvert carrying FM 156 over Flat Draw in Denton County, Texas. It was built in 1947 and reconstructed in 2015, so it is 78 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 7,857 vehicles a day, roughly 7% of them trucks, projected to reach 5,180 by 2033. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 156
CrossesFlat Draw
Location0.60 MI N of US 380
RouteState Highway 156
StateTexas
Coordinates33.24315, -97.24516
Functional classRural Minor Arterial

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length34 ft (10.4 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,857 (2023)
Projected traffic5,180 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 156 over Flat Draw built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 2015.

What condition is FM 156 over Flat 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 September 2023.

How much traffic does FM 156 over Flat Draw carry?

About 7,857 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is FM 156 over Flat Draw?

The structure is 34 ft (10.4 m) long with a longest span of 6 ft (1.8 m).

Who owns FM 156 over Flat Draw?

It is owned by the State Highway Agency.