Structure 180430081605056 · Collin County, TX

FM 2862 over Sister Grove Creek

Carries FM 2862 over Sister Grove Creek, 3.2 Mi NW Of SH 121.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT472 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

472 ft end to end, longest span 79 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.

Built200422 years old
Length472.1 ft143.9 m
Daily traffic804counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyCollin
Location3.2 Mi NW Of SH 121
CarriesFM 2862
CrossesSister Grove Creek
Coordinates33.36763, -96.49488

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length472.1 ft (143.9 m)
Max Span79.1 ft (24.1 m)
Deck Width45.3 ft (13.8 m)
Deck Area1985.8 sq m
Main Spans6
Year Built2004

Traffic

Avg Daily Traffic804 (2019)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180430081605056

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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