Structure 810042 · Guilford County, NC

Merrit Drive over Sr4239

Carries Merrit Drive over Sr4239, 0.95 Mi. N. Jct. I40.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT138 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

138 ft end to end, longest span 71 ft. 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.

Built199828 years old
Length137.8 ft42 m
Daily traffic18,000counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateNorth Carolina
CountyGuilford
Location0.95 Mi. N. Jct. I40
CarriesMerrit Drive
CrossesSr4239
Coordinates36.05495, -79.85425

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length137.8 ft (42 m)
Max Span70.9 ft (21.6 m)
Deck Width79.7 ft (24.3 m)
Deck Area1020.6 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic18,000 (2021)
Truck Traffic7%
Lanes On Bridge5
Lanes Under Bridge2

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 Number000000000810042

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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