US Bridges

Lp 12 over Straight Branch

Fair

Dallas County, Texas · 3.1MI W of US75 · Structure no. 180570035305030

Built
1930
95 years old, rebuilt 1970
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
39,382
2022 count
Owner
State
State Highway Agency

About this bridge

Lp 12 over Straight Branch is a concrete culvert carrying Lp 12 over Straight Branch in Dallas County, Texas. It was built in 1930 and reconstructed in 1970, so it is 95 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 39,382 vehicles a day, roughly 2% of them trucks, projected to reach 53,330 by 2033. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLp 12
CrossesStraight Branch
Location3.1MI W of US75
RouteState Highway 12
CountyDallas County
StateTexas
Coordinates32.866, -96.82653
Functional classUrban Other Principal Arterial

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,382 (2022)
Projected traffic53,330 by 2033
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lp 12 over Straight Branch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1970.

What condition is Lp 12 over Straight 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 January 2024.

How much traffic does Lp 12 over Straight Branch carry?

About 39,382 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Lp 12 over Straight Branch?

The structure is 28 ft (8.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Lp 12 over Straight Branch?

It is owned by the State Highway Agency.