Structure 180570237403309 · Dallas County, TX

IH 45 NB Conn A over Ih20/ih45 Interchange

Carries IH 45 NB Conn A over Ih20/ih45 Interchange, At Int IH 20 & IH 45.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,822 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

1,822 ft end to end, longest span 182 ft: about 5.1 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.

Built1973rebuilt 2019
Length1821.9 ft555.3 m
Daily traffic11,235counted 2019
Last inspectedOctober 2023every 24 months

Location

StateTexas
CountyDallas
LocationAt Int IH 20 & IH 45
CarriesIH 45 NB Conn A
CrossesIh20/ih45 Interchange
Coordinates32.65988, -96.72336

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1821.9 ft (555.3 m)
Max Span182.4 ft (55.6 m)
Deck Width25.9 ft (7.9 m)
Deck Area4386.9 sq m
Main Spans2
Year Built1973 (reconstructed 2019)

Traffic

Avg Daily Traffic11,235 (2019)
Lanes On Bridge1
Lanes Under Bridge18

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number180570237403309

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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