Structure 180430004714650 · Collin County, TX

US 75 NB over FM 543

Carries US 75 NB over FM 543, 2.5 Mi NE Of US 380.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT367 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

367 ft end to end, longest span 127 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.

Built201511 years old
Length367.1 ft111.9 m
Daily traffic67,568counted 2023
Last inspectedNovember 2023every 24 months

Location

StateTexas
CountyCollin
Location2.5 Mi NE Of US 380
CarriesUS 75 NB
CrossesFM 543
Coordinates33.25017, -96.61841

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length367.1 ft (111.9 m)
Max Span127.0 ft (38.7 m)
Deck Width73.2 ft (22.3 m)
Deck Area2495.4 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic67,568 (2023)
Truck Traffic14%
Lanes On Bridge4
Lanes Under Bridge10

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180430004714650

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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