US Bridges

Loop 12 Nbfr over IH 30

Fair

Dallas County, Texas · At Loop 12 Interchange · Structure no. 180570000911338

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
340 ft
2 main spans
Daily traffic
9,099
2020 count
Owner
State
State Highway Agency

About this bridge

Loop 12 Nbfr over IH 30 is a steel continuous stringer/multi-beam or girder carrying Loop 12 Nbfr over IH 30 in Dallas County, Texas. It was built in 1979, so it is 46 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 9,099 vehicles a day, roughly 5% of them trucks, projected to reach 12,739 by 2040. The structure is 340 ft (103.6 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLoop 12 Nbfr
CrossesIH 30
LocationAt Loop 12 Interchange
RouteState Highway 12
CountyDallas County
StateTexas
Coordinates32.79821, -96.68177
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length340 ft (103.6 m)
Longest span152 ft (46.3 m)
Deck width62 ft (18.9 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,099 (2020)
Projected traffic12,739 by 2040
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Loop 12 Nbfr over IH 30 built?

It was built in 1979, making it 46 years old in 2025.

What condition is Loop 12 Nbfr over IH 30 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 November 2023.

How much traffic does Loop 12 Nbfr over IH 30 carry?

About 9,099 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Loop 12 Nbfr over IH 30?

The structure is 340 ft (103.6 m) long with a longest span of 152 ft (46.3 m) and a deck 62 ft wide.

Who owns Loop 12 Nbfr over IH 30?

It is owned by the State Highway Agency.