US Bridges

SH 356 over Lp 12

Fair

Dallas County, Texas · 1.95 MI S of SH 183 · Structure no. 180570009207185

Built
1964
61 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
191 ft
2 main spans
Daily traffic
24,075
2019 count
Owner
State
State Highway Agency

About this bridge

SH 356 over Lp 12 is a prestressed concrete stringer/multi-beam or girder carrying SH 356 over Lp 12 in Dallas County, Texas. It was built in 1964, so it is 61 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 24,075 vehicles a day, roughly 16% of them trucks, projected to reach 25,620 by 2033. The structure is 191 ft (58.2 m) long and 106 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSH 356
CrossesLp 12
Location1.95 MI S of SH 183
RouteState Highway 356
CountyDallas County
StateTexas
Coordinates32.80967, -96.92159
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length191 ft (58.2 m)
Longest span60 ft (18.3 m)
Deck width106 ft (32.2 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,075 (2019)
Projected traffic25,620 by 2033
Trucks16%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$43,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 356 over Lp 12 built?

It was built in 1964, making it 61 years old in 2025.

What condition is SH 356 over Lp 12 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 2024.

How much traffic does SH 356 over Lp 12 carry?

About 24,075 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is SH 356 over Lp 12?

The structure is 191 ft (58.2 m) long with a longest span of 60 ft (18.3 m) and a deck 106 ft wide.

Who owns SH 356 over Lp 12?

It is owned by the State Highway Agency.