Structure 180430004706299 · Collin County, TX

US 75 Nbml over Rowlett Creek

Carries US 75 Nbml over Rowlett Creek, 1.90 Mi S Of FM 2170.

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT280 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

280 ft end to end, longest span 40 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.

Built1992rebuilt 2015
Length279.9 ft85.3 m
Daily traffic82,600counted 2015
Last inspectedOctober 2023every 24 months

Location

StateTexas
CountyCollin
Location1.90 Mi S Of FM 2170
CarriesUS 75 Nbml
CrossesRowlett Creek
Coordinates33.07559, -96.68616

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length279.9 ft (85.3 m)
Max Span40.0 ft (12.2 m)
Deck Width73.2 ft (22.3 m)
Deck Area1902.2 sq m
Main Spans7
Year Built1992 (reconstructed 2015)

Traffic

Avg Daily Traffic82,600 (2015)
Truck Traffic6%
Lanes On Bridge5

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180430004706299

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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