Structure 630008 · Durham County, NC

Sr1602 over Flat River

Carries Sr1602 over Flat River, 0.55 Mi. E. Jct. Sr1601.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT205 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

205 ft end to end, longest span 69 ft: about 3 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.

Built201511 years old
Length204.7 ft62.4 m
Daily traffic480counted 2004
Last inspectedDecember 2021every 48 months

Location

StateNorth Carolina
CountyDurham
Location0.55 Mi. E. Jct. Sr1601
CarriesSr1602
CrossesFlat River
Coordinates36.23564, -78.89565

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length204.7 ft (62.4 m)
Max Span68.9 ft (21 m)
Deck Width29.9 ft (9.1 m)
Deck Area567.8 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic480 (2004)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000630008

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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