US Bridges

FM 470 over Williams Creek

Good

Bandera County, Texas · 0.3 MI W of FM 462 · Structure no. 150100079204006

Built
1972
53 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
4 main spans
Daily traffic
557
2023 count
Owner
State
State Highway Agency

About this bridge

FM 470 over Williams Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 470 over Williams Creek in Bandera County, Texas. It was built in 1972, so it is 53 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 557 vehicles a day, roughly 10% of them trucks, projected to reach 920 by 2033. The structure is 260 ft (79.2 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFM 470
CrossesWilliams Creek
Location0.3 MI W of FM 462
RouteState Highway 470
StateTexas
Coordinates29.6567, -99.27814
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating55 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length260 ft (79.2 m)
Longest span65 ft (19.8 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic557 (2023)
Projected traffic920 by 2033
Trucks10%
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 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 470 over Williams Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is FM 470 over Williams 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 2024.

How much traffic does FM 470 over Williams Creek carry?

About 557 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FM 470 over Williams Creek?

The structure is 260 ft (79.2 m) long with a longest span of 65 ft (19.8 m) and a deck 28 ft wide.

Who owns FM 470 over Williams Creek?

It is owned by the State Highway Agency.