Structure 1830665 · Wake County, NC

Us70 over Sr1837

Carries Us70 over Sr1837, 1.8 Mi. W. Jct. Sr1837.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT147 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

147 ft end to end: 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 multi-beam bridge.

Built199333 years old
Length147.0 ft44.8 m
Daily traffic41,000counted 2018
Last inspectedJuly 2021every 48 months

Location

StateNorth Carolina
CountyWake
Location1.8 Mi. W. Jct. Sr1837
CarriesUs70
CrossesSr1837
Coordinates35.90155, -78.76593

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length147.0 ft (44.8 m)
Max Span143.7 ft (43.8 m)
Deck Width116.8 ft (35.6 m)
Deck Area1594.9 sq m
Main Spans1
Year Built1993

Traffic

Avg Daily Traffic41,000 (2018)
Truck Traffic12%
Lanes On Bridge4
Lanes Under Bridge9

Inspection & Ownership

Last InspectionJuly 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001830665

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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