Structure 10172 · Alamance County, NC

Sr1149 over Lake Macintosh

Carries Sr1149 over Lake Macintosh, 0.6 Mi. S. Of Jct. Sr1150.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT285 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

285 ft end to end, longest span 70 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.

Built198541 years old
Length284.8 ft86.8 m
Daily traffic3,800counted 2022
Last inspectedNovember 2024every 24 months

Location

StateNorth Carolina
CountyAlamance
Location0.6 Mi. S. Of Jct. Sr1150
CarriesSr1149
CrossesLake Macintosh
Coordinates36.03979, -79.52446

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length284.8 ft (86.8 m)
Max Span69.9 ft (21.3 m)
Deck Width32.5 ft (9.9 m)
Deck Area859.3 sq m
Main Spans4
Year Built1985

Traffic

Avg Daily Traffic3,800 (2022)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000010172

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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