Structure 180570237403212 · Dallas County, TX

IH 20 Wbml over Union Pacific Railroad

Carries IH 20 Wbml over Union Pacific Railroad, 0.3 Mi E Of IH 45.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT394 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

394 ft end to end, longest span 75 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.

Built197353 years old
Length394.0 ft120.1 m
Daily traffic61,074counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyDallas
Location0.3 Mi E Of IH 45
CarriesIH 20 Wbml
CrossesUnion Pacific Railroad
Coordinates32.66470, -96.72115

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length394.0 ft (120.1 m)
Max Span75.1 ft (22.9 m)
Deck Width69.9 ft (21.3 m)
Deck Area2558.1 sq m
Main Spans6
Year Built1973

Traffic

Avg Daily Traffic61,074 (2020)
Truck Traffic19%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number180570237403212

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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