US Bridges

US 59 over Post Oak Branch

Good

Jackson County, Texas · 1.00 MI W of Lp 521 · Structure no. 131210008904118

Built
1972
53 years old, rebuilt 2006
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
22,393
2020 count
Owner
State
State Highway Agency

About this bridge

US 59 over Post Oak Branch is a concrete culvert carrying US 59 over Post Oak Branch in Jackson County, Texas. It was built in 1972 and reconstructed in 2006, 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 22,393 vehicles a day, roughly 17% of them trucks, projected to reach 32,670 by 2033. The structure is 32 ft (9.8 m) long and 339 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 59
CrossesPost Oak Branch
Location1.00 MI W of Lp 521
RouteU.S. Route 59
StateTexas
Coordinates28.99004, -96.64207
Functional classUrban Other Principal Arterial

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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to 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 spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span8 ft (2.4 m)
Deck width339 ft (103.3 m)
Roadway width135 ft (41.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,393 (2020)
Projected traffic32,670 by 2033
Trucks17%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 US 59 over Post Oak Branch built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2006.

What condition is US 59 over Post Oak 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 US 59 over Post Oak Branch carry?

About 22,393 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is US 59 over Post Oak Branch?

The structure is 32 ft (9.8 m) long with a longest span of 8 ft (2.4 m) and a deck 339 ft wide.

Who owns US 59 over Post Oak Branch?

It is owned by the State Highway Agency.