US Bridges

Dallas ST NB over Pin Oak Branch

Fair

Montgomery County, Texas · 0.05 MI NE of SH 105 · Structure no. 121700C00225117

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
43 ft
3 main spans
Daily traffic
7,740
2013 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Dallas ST NB over Pin Oak Branch is a concrete culvert carrying Dallas ST NB over Pin Oak Branch in Montgomery County, Texas. It was built in 1975, so it is 50 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 7,740 vehicles a day, projected to reach 7,740 by 2033. The structure is 43 ft (13.1 m) long and 70 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDallas ST NB
CrossesPin Oak Branch
Location0.05 MI NE of SH 105
RouteCity Street 0
CountyMontgomery County
StateTexas
Coordinates30.31458, -95.46915
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 geometry9: Superior to present desirable criteria
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
DeckNot applicable
Main spans3
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span14 ft (4.3 m)
Deck width70 ft (21.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,740 (2013)
Projected traffic7,740 by 2033
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$39,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Dallas ST NB over Pin Oak Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is Dallas ST NB 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 Dallas ST NB over Pin Oak Branch carry?

About 7,740 vehicles per day (2013 count).

How long is Dallas ST NB over Pin Oak Branch?

The structure is 43 ft (13.1 m) long with a longest span of 14 ft (4.3 m) and a deck 70 ft wide.

Who owns Dallas ST NB over Pin Oak Branch?

It is owned by the Town or Township Highway Agency.