Structure 630272 · Durham County, NC

Sr1004 over Flat River

Carries Sr1004 over Flat River, 0.3 Mi. N. Jct. Sr1680.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
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 FT265 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

265 ft end to end, longest span 65 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.

Built198145 years old
Length264.8 ft80.7 m
Daily traffic3,800counted 2021
Last inspectedJune 2023every 24 months

Location

StateNorth Carolina
CountyDurham
Location0.3 Mi. N. Jct. Sr1680
CarriesSr1004
CrossesFlat River
Coordinates36.13153, -78.82797

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length264.8 ft (80.7 m)
Max Span65.0 ft (19.8 m)
Deck Width34.8 ft (10.6 m)
Deck Area855.4 sq m
Main Spans4
Year Built1981

Traffic

Avg Daily Traffic3,800 (2021)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000630272

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.

Nearby Bridges