Structure 180570000911338 · Dallas County, TX

Loop 12 Nbfr over IH 30

Carries Loop 12 Nbfr over IH 30, At Loop 12 Interchange.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT340 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

340 ft end to end, longest span 152 ft: about 5 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built197947 years old
Length339.9 ft103.6 m
Daily traffic9,099counted 2020
Last inspectedNovember 2023every 24 months

Location

StateTexas
CountyDallas
LocationAt Loop 12 Interchange
CarriesLoop 12 Nbfr
CrossesIH 30
Coordinates32.79821, -96.68178

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length339.9 ft (103.6 m)
Max Span151.9 ft (46.3 m)
Deck Width62.0 ft (18.9 m)
Deck Area1958.0 sq m
Main Spans2
Year Built1979

Traffic

Avg Daily Traffic9,099 (2020)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge10

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570000911338

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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