Structure 180570300001014 · Dallas County, TX

Illinois AVE over Spur 408

Carries Illinois AVE over Spur 408, 1.35 Mi N Of Kiest BLVD.

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 FT480 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

480 ft end to end, longest span 105 ft: about 7 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.

Built197551 years old
Length480.0 ft146.3 m
Daily traffic16,158counted 2019
Last inspectedOctober 2023every 48 months

Location

StateTexas
CountyDallas
Location1.35 Mi N Of Kiest BLVD
CarriesIllinois AVE
CrossesSpur 408
Coordinates32.72054, -96.91775

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length480.0 ft (146.3 m)
Max Span105.0 ft (32 m)
Deck Width94.2 ft (28.7 m)
Deck Area4198.8 sq m
Main Spans2
Year Built1975

Traffic

Avg Daily Traffic16,158 (2019)
Truck Traffic3%
Lanes On Bridge6
Lanes Under Bridge6

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number180570300001014

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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