US Bridges

Roberson ST over Pin Oak Branch

Fair

Montgomery County, Texas · 0.36 MI N of Lewis ST · Structure no. 121700C01080115

Built
1955
70 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
33 ft
5 main spans
Daily traffic
4,090
2013 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Roberson ST over Pin Oak Branch is a concrete culvert carrying Roberson ST over Pin Oak Branch in Montgomery County, Texas. It was built in 1955, so it is 70 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 4,090 vehicles a day, roughly 1% of them trucks, projected to reach 6,000 by 2033. The structure is 33 ft (10.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoberson ST
CrossesPin Oak Branch
Location0.36 MI N of Lewis ST
RouteCity Street 0
CountyMontgomery County
StateTexas
Coordinates30.32118, -95.46031
Functional classUrban Local

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 inspectionSeptember 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span5 ft (1.5 m)
Deck width47 ft (14.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,090 (2013)
Projected traffic6,000 by 2033
Trucks1%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$26,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Roberson ST over Pin Oak Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is Roberson ST over Pin Oak Branch 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 September 2023.

How much traffic does Roberson ST over Pin Oak Branch carry?

About 4,090 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Roberson ST over Pin Oak Branch?

The structure is 33 ft (10.1 m) long with a longest span of 5 ft (1.5 m) and a deck 47 ft wide.

Who owns Roberson ST over Pin Oak Branch?

It is owned by the Town or Township Highway Agency.