US Bridges

RM 3347 over Walnut Creek

Good

Blanco County, Texas · 1.10 MI W of RM 962 · Structure no. 140160153602007

Built
1977
48 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
61 ft
2 main spans
Daily traffic
289
2020 count
Owner
State
State Highway Agency

About this bridge

RM 3347 over Walnut Creek is a concrete stringer/multi-beam or girder carrying RM 3347 over Walnut Creek in Blanco 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 289 vehicles a day, roughly 6% of them trucks, projected to reach 230 by 2033. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRM 3347
CrossesWalnut Creek
Location1.10 MI W of RM 962
RouteState Highway 3347
CountyBlanco County
StateTexas
Coordinates30.49209, -98.45658
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length61 ft (18.6 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic289 (2020)
Projected traffic230 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 RM 3347 over Walnut Creek built?

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

What condition is RM 3347 over Walnut Creek 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 May 2023.

How much traffic does RM 3347 over Walnut Creek carry?

About 289 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is RM 3347 over Walnut Creek?

The structure is 61 ft (18.6 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns RM 3347 over Walnut Creek?

It is owned by the State Highway Agency.