Structure 1010173 · Johnston County, NC

Sr1700 over Buffalo Creek

Carries Sr1700 over Buffalo Creek, 0.8 Mi W Jct Sr1720.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT163 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

163 ft end to end, longest span 59 ft: about 2 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 slab bridge.

Built20242 years old
Length162.7 ft49.6 m
Daily traffic5,100counted 2022
Last inspectedOctober 2024every 24 months

Location

StateNorth Carolina
CountyJohnston
Location0.8 Mi W Jct Sr1720
CarriesSr1700
CrossesBuffalo Creek
Coordinates35.69642, -78.34384

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length162.7 ft (49.6 m)
Max Span58.7 ft (17.9 m)
Deck Width32.8 ft (10 m)
Deck Area496 sq m
Main Spans3
Year Built2024

Traffic

Avg Daily Traffic5,100 (2022)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000001010173

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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