US Bridges

FM 3349 over Avery Branch

Good

Williamson County, Texas · 3.7 MI S of US 79 · Structure no. 142460348601004

Built
1977
48 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
1,339
2021 count
Owner
State
State Highway Agency

About this bridge

FM 3349 over Avery Branch is a concrete culvert carrying FM 3349 over Avery Branch in Williamson County, Texas. It was built in 1977, so it is 48 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 1,339 vehicles a day, roughly 6% of them trucks, projected to reach 1,901 by 2041. The structure is 37 ft (11.3 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM 3349
CrossesAvery Branch
Location3.7 MI S of US 79
RouteState Highway 3349
StateTexas
Coordinates30.50142, -97.49245
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span11 ft (3.4 m)
Deck width35 ft (10.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,339 (2021)
Projected traffic1,901 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 3349 over Avery Branch built?

It was built in 1977, making it 48 years old in 2025.

What condition is FM 3349 over Avery Branch 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 March 2023.

How much traffic does FM 3349 over Avery Branch carry?

About 1,339 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is FM 3349 over Avery Branch?

The structure is 37 ft (11.3 m) long with a longest span of 11 ft (3.4 m) and a deck 35 ft wide.

Who owns FM 3349 over Avery Branch?

It is owned by the State Highway Agency.