Structure 1804309D0470062 · Collin County, TX

Dnt Nbfr over Parvin Branch

Carries Dnt Nbfr over Parvin Branch, 0.4 Mi S 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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT500 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

500 ft end to end, longest span 100 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.

Built2003rebuilt 2023
Length500.0 ft152.4 m
Daily traffic27,481counted 2022
Last inspectedJanuary 2024every 24 months

Location

StateTexas
CountyCollin
Location0.4 Mi S Of US 380
CarriesDnt Nbfr
CrossesParvin Branch
Coordinates33.21293, -96.81961

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length500.0 ft (152.4 m)
Max Span100.1 ft (30.5 m)
Deck Width53.1 ft (16.2 m)
Deck Area2468.9 sq m
Main Spans5
Year Built2003 (reconstructed 2023)

Traffic

Avg Daily Traffic27,481 (2022)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number1804309D0470062

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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