US Bridges

FM 306 over Draw

Good

Comal County, Texas · 0.05 MI East of FM 484 · Structure no. 150460085701006

Built
1968
57 years old, rebuilt 2011
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
7,145
2020 count
Owner
State
State Highway Agency

About this bridge

FM 306 over Draw is a concrete culvert carrying FM 306 over Draw in Comal County, Texas. It was built in 1968 and reconstructed in 2011, so it is 57 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 7,145 vehicles a day, roughly 5% of them trucks, projected to reach 8,300 by 2033. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM 306
CrossesDraw
Location0.05 MI East of FM 484
RouteState Highway 306
StateTexas
Coordinates29.93796, -98.26027
Functional classRural Principal Arterial - Other

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 inspectionJune 2024
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 adequacy6: Equal to 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 (9.4 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,145 (2020)
Projected traffic8,300 by 2033
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 306 over Draw built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2011.

What condition is FM 306 over 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 June 2024.

How much traffic does FM 306 over Draw carry?

About 7,145 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is FM 306 over Draw?

The structure is 31 ft (9.4 m) long with a longest span of 9 ft (2.7 m).

Who owns FM 306 over Draw?

It is owned by the State Highway Agency.