Structure 6179 · Garland County, AR

SH 7-9 Log 4.20 over Ouachita Rv-lake Hamilt

Carries SH 7-9 Log 4.20 over Ouachita Rv-lake Hamilt, 6 Mi So Jct 70 & 270.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,278 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,278 ft end to end, longest span 206 ft: about 3.5 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.

Built199135 years old
Length1277.9 ft389.5 m
Daily traffic18,000counted 2018
Last inspectedSeptember 2022every 48 months

Location

StateArkansas
CountyGarland
Location6 Mi So Jct 70 & 270
CarriesSH 7-9 Log 4.20
CrossesOuachita Rv-lake Hamilt
Coordinates34.43154, -93.08627

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1277.9 ft (389.5 m)
Max Span206.0 ft (62.8 m)
Deck Width70.9 ft (21.6 m)
Deck Area8413.2 sq m
Main Spans7
Year Built1991

Traffic

Avg Daily Traffic18,000 (2018)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000006179

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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