Structure 180570009207185 · Dallas County, TX

SH 356 over Lp 12

Carries SH 356 over Lp 12, 1.95 Mi S Of SH 183.

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 FT191 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

191 ft end to end, longest span 60 ft: about 3 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.

Built196462 years old
Length190.9 ft58.2 m
Daily traffic24,075counted 2019
Last inspectedFebruary 2024every 24 months

Location

StateTexas
CountyDallas
Location1.95 Mi S Of SH 183
CarriesSH 356
CrossesLp 12
Coordinates32.80967, -96.92159

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length190.9 ft (58.2 m)
Max Span60.0 ft (18.3 m)
Deck Width105.6 ft (32.2 m)
Deck Area1874.0 sq m
Main Spans2
Year Built1964

Traffic

Avg Daily Traffic24,075 (2019)
Truck Traffic16%
Lanes On Bridge8
Lanes Under Bridge6

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number180570009207185

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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