US Bridges

Lp 12 over SH 310

Good

Dallas County, Texas · 3.20 MI NW of IH 20 · Structure no. 180570009202348

Built
1999
26 years old
Condition
Good
inspected March 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
235 ft
4 main spans
Daily traffic
27,064
2023 count
Owner
State
State Highway Agency

About this bridge

Lp 12 over SH 310 is a prestressed concrete stringer/multi-beam or girder carrying Lp 12 over SH 310 in Dallas County, Texas. It was built in 1999, so it is 26 years old, younger 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 27,064 vehicles a day, roughly 7% of them trucks, projected to reach 33,750 by 2035. The structure is 235 ft (71.6 m) long and 96 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLp 12
CrossesSH 310
Location3.20 MI NW of IH 20
RouteState Highway 12
CountyDallas County
StateTexas
Coordinates32.70292, -96.74763
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length235 ft (71.6 m)
Longest span60 ft (18.3 m)
Deck width96 ft (29.3 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,064 (2023)
Projected traffic33,750 by 2035
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lp 12 over SH 310 built?

It was built in 1999, making it 26 years old in 2025.

What condition is Lp 12 over SH 310 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 2022.

How much traffic does Lp 12 over SH 310 carry?

About 27,064 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Lp 12 over SH 310?

The structure is 235 ft (71.6 m) long with a longest span of 60 ft (18.3 m) and a deck 96 ft wide.

Who owns Lp 12 over SH 310?

It is owned by the State Highway Agency.