Structure 1230251 · Montgomery County, NC

Sr1640 over I73/74 Us220

Carries Sr1640 over I73/74 Us220, 0.6 Mi. S. Jct. Sr1524.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT223 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

223 ft end to end, longest span 111 ft: about 3 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.

Built200620 years old
Length222.8 ft67.9 m
Daily traffic200counted 2007
Last inspectedDecember 2023every 24 months

Location

StateNorth Carolina
CountyMontgomery
Location0.6 Mi. S. Jct. Sr1524
CarriesSr1640
CrossesI73/74 Us220
Coordinates35.18706, -79.72171

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length222.8 ft (67.9 m)
Max Span110.9 ft (33.8 m)
Deck Width31.2 ft (9.5 m)
Deck Area645.0 sq m
Main Spans2
Year Built2006

Traffic

Avg Daily Traffic200 (2007)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001230251

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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