Structure 180570237404113 · Dallas County, TX

SH 161 over IH 20

Carries SH 161 over IH 20, SH 161 @ IH 20.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT365 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

365 ft end to end, longest span 120 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.

Built200719 years old
Length365.2 ft111.3 m
Daily traffic27,565counted 2022
Last inspectedJune 2023every 48 months

Location

StateTexas
CountyDallas
LocationSH 161 @ IH 20
CarriesSH 161
CrossesIH 20
Coordinates32.67549, -97.02369

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length365.2 ft (111.3 m)
Max Span120.1 ft (36.6 m)
Deck Width96.1 ft (29.3 m)
Deck Area3261.1 sq m
Main Spans2
Year Built2007

Traffic

Avg Daily Traffic27,565 (2022)
Truck Traffic4%
Lanes On Bridge5
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180570237404113

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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