Structure 5872 · Garland County, AR

US 70 over Lake Hamilton

Carries US 70 over Lake Hamilton, 2 SW Jct SH 270.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,410 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

1,410 ft end to end, longest span 192 ft: about 3.9 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.

Built198442 years old
Length1410.1 ft429.8 m
Daily traffic34,000counted 2018
Last inspectedAugust 2023every 24 months

Location

StateArkansas
CountyGarland
Location2 SW Jct SH 270
CarriesUS 70
CrossesLake Hamilton
Coordinates34.47172, -93.12725

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1410.1 ft (429.8 m)
Max Span191.9 ft (58.5 m)
Deck Width66.9 ft (20.4 m)
Deck Area8767.9 sq m
Main Spans7
Year Built1984

Traffic

Avg Daily Traffic34,000 (2018)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000005872

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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