Structure 810169 · Guilford County, NC

Sr1129 over I85 Us29 Us70

Carries Sr1129 over I85 Us29 Us70, 0.25 Mi. N. Jct. Sr1116.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT330 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

330 ft end to end, longest span 118 ft: about 5 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.

Built197452 years old
Length329.7 ft100.5 m
Daily traffic12,000counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateNorth Carolina
CountyGuilford
Location0.25 Mi. N. Jct. Sr1116
CarriesSr1129
CrossesI85 Us29 Us70
Coordinates35.99736, -79.86468

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length329.7 ft (100.5 m)
Max Span117.8 ft (35.9 m)
Deck Width69.9 ft (21.3 m)
Deck Area2140.7 sq m
Main Spans2
Year Built1974

Traffic

Avg Daily Traffic12,000 (2022)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge10

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000810169

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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