US Bridges

FM 109 over Post Oak Point Creek

Fair

Austin County, Texas · 1.00 MI SE of SH 159 · Structure no. 130080071601021

Built
1982
43 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
200 ft
5 main spans
Daily traffic
2,081
2020 count
Owner
State
State Highway Agency

About this bridge

FM 109 over Post Oak Point Creek is a concrete stringer/multi-beam or girder carrying FM 109 over Post Oak Point Creek in Austin County, Texas. It was built in 1982, so it is 43 years old, younger 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 2,081 vehicles a day, roughly 6% of them trucks, projected to reach 2,930 by 2033. The structure is 200 ft (61 m) long and 46 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesFM 109
CrossesPost Oak Point Creek
Location1.00 MI SE of SH 159
RouteState Highway 109
StateTexas
Coordinates29.95857, -96.49558
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,081 (2020)
Projected traffic2,930 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 109 over Post Oak Point Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is FM 109 over Post Oak Point Creek 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 February 2023.

How much traffic does FM 109 over Post Oak Point Creek carry?

About 2,081 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FM 109 over Post Oak Point Creek?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

Who owns FM 109 over Post Oak Point Creek?

It is owned by the State Highway Agency.