Structure 470271 · Columbus County, NC

Sr1818 over Mill Creek

Carries Sr1818 over Mill Creek, 0.7 Mi. N. Jct. Sr1820.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 46 ft across with 3 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built198541 years old
Length45.9 ft14 m
Daily traffic780counted 2017
Last inspectedMay 2023every 24 months

Location

StateNorth Carolina
CountyColumbus
Location0.7 Mi. N. Jct. Sr1820
CarriesSr1818
CrossesMill Creek
Coordinates34.33124, -78.19384

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length45.9 ft (14 m)
Max Span11.8 ft (3.6 m)
Deck Area84 sq m
Main Spans3
Year Built1985

Traffic

Avg Daily Traffic780 (2017)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000470271

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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