Structure 9880 · Horry County, SC

US 501 SB over Forestbrook RD

Carries US 501 SB over Forestbrook RD, 4 Mi N. Of Myrtle Beach.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,015 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,015 ft end to end, longest span 294 ft: about 2.8 football fields. 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.

Built200422 years old
Length1014.8 ft309.3 m
Daily traffic31,900counted 2023
Last inspectedOctober 2024every 24 months

Location

StateSouth Carolina
CountyHorry
Location4 Mi N. Of Myrtle Beach
CarriesUS 501 SB
CrossesForestbrook RD
Coordinates33.73244, -78.94464

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1014.8 ft (309.3 m)
Max Span294.0 ft (89.6 m)
Deck Width70.5 ft (21.5 m)
Deck Area6649.9 sq m
Main Spans5
Year Built2004

Traffic

Avg Daily Traffic31,900 (2023)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number000000000009880

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