Structure 1710211 · Surry County, NC

Sr1618 over I-77

Carries Sr1618 over I-77, .1 Mi.w.jct.sr1618.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

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

299 ft end to end, longest span 108 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.

Built197551 years old
Length298.9 ft91.1 m
Daily traffic1,100counted 2022
Last inspectedNovember 2023every 24 months

Location

StateNorth Carolina
CountySurry
Location.1 Mi.w.jct.sr1618
CarriesSr1618
CrossesI-77
Coordinates36.53272, -80.75004

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length298.9 ft (91.1 m)
Max Span107.9 ft (32.9 m)
Deck Width31.8 ft (9.7 m)
Deck Area883.7 sq m
Main Spans2
Year Built1975

Traffic

Avg Daily Traffic1,100 (2022)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001710211

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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