US Bridges

FM 3346 over Brazos River Tributary

Fair

Waller County, Texas · 0.04 MI E of SH 159 · Structure no. 122370344501001

Built
1977
48 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,321
2020 count
Owner
State
State Highway Agency

About this bridge

FM 3346 over Brazos River Tributary is a concrete culvert carrying FM 3346 over Brazos River Tributary in Waller 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,321 vehicles a day, roughly 10% of them trucks, projected to reach 1,110 by 2033. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFM 3346
CrossesBrazos River Tributary
Location0.04 MI E of SH 159
RouteState Highway 3346
CountyWaller County
StateTexas
Coordinates30.05298, -96.10535
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: 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
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,321 (2020)
Projected traffic1,110 by 2033
Trucks10%
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 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 3346 over Brazos River Tributary built?

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

What condition is FM 3346 over Brazos River Tributary in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does FM 3346 over Brazos River Tributary carry?

About 1,321 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is FM 3346 over Brazos River Tributary?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns FM 3346 over Brazos River Tributary?

It is owned by the State Highway Agency.