Structure 180430004706400 · Collin County, TX

US 75 NB over FM 2170 (mcdermott Dr)

Carries US 75 NB over FM 2170 (mcdermott Dr), At Int Of US 75 & FM 2170.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT299 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

299 ft end to end, longest span 105 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.

Built1999rebuilt 2016
Length298.9 ft91.1 m
Daily traffic65,851counted 2019
Last inspectedOctober 2023every 48 months

Location

StateTexas
CountyCollin
LocationAt Int Of US 75 & FM 2170
CarriesUS 75 NB
CrossesFM 2170 (mcdermott Dr)
Coordinates33.10189, -96.67781

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length298.9 ft (91.1 m)
Max Span105.0 ft (32 m)
Deck Width61.0 ft (18.6 m)
Deck Area1694.5 sq m
Main Spans3
Year Built1999 (reconstructed 2016)

Traffic

Avg Daily Traffic65,851 (2019)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge8

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number180430004706400

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.

Nearby Bridges