Structure 180570000911346 · Dallas County, TX

IH 45 SB Conn D over IH 30

Carries IH 45 SB Conn D over IH 30, 0.3 Mi E Of Preston ST.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT268 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

268 ft end to end, longest span 86 ft: about 4 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.

Built1961rebuilt 1971
Length268.0 ft81.7 m
Daily traffic84,500counted 2016
Last inspectedMarch 2024every 24 months

Location

StateTexas
CountyDallas
Location0.3 Mi E Of Preston ST
CarriesIH 45 SB Conn D
CrossesIH 30
Coordinates32.77889, -96.78162

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length268.0 ft (81.7 m)
Max Span86.0 ft (26.2 m)
Deck Width35.8 ft (10.9 m)
Deck Area890.5 sq m
Main Spans4
Year Built1961 (reconstructed 1971)

Traffic

Avg Daily Traffic84,500 (2016)
Truck Traffic17%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number180570000911346

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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