Structure 180570237403192 · Dallas County, TX

IH 20 WB over Trinity River

Carries IH 20 WB over Trinity River, 2.5 Mi E Of IH 45.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,400 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

2,400 ft end to end, longest span 310 ft: about 6.7 football fields. 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.

Built197155 years old
Length2399.9 ft731.5 m
Daily traffic69,471counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyDallas
Location2.5 Mi E Of IH 45
CarriesIH 20 WB
CrossesTrinity River
Coordinates32.67744, -96.69154

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2399.9 ft (731.5 m)
Max Span310.0 ft (94.5 m)
Deck Width70.2 ft (21.4 m)
Deck Area15654.1 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic69,471 (2023)
Truck Traffic13%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical6 — Scour calculated, stable
Structure Number180570237403192

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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