US Bridges

US 270 over Lake Hamilton

Fair

Garland County, Arkansas · 6.22 MI West JCT US 70B · Structure no. 000000000006429

Built
1994
31 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
592 ft
5 main spans
Daily traffic
8,700
2018 count
Owner
State
State Highway Agency

About this bridge

US 270 over Lake Hamilton is a steel continuous stringer/multi-beam or girder carrying US 270 over Lake Hamilton in Garland County, Arkansas. It was built in 1994, so it is 31 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,700 vehicles a day, roughly 4% of them trucks, projected to reach 9,600 by 2038. The structure is 592 ft (180.4 m) long and 75 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesUS 270
CrossesLake Hamilton
Location6.22 MI West JCT US 70B
RouteU.S. Route 270
CountyGarland County
StateArkansas
Coordinates34.50742, -93.18307
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length592 ft (180.4 m)
Longest span170 ft (51.8 m)
Deck width75 ft (22.8 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2018)
Projected traffic9,600 by 2038
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 270 over Lake Hamilton built?

It was built in 1994, making it 31 years old in 2025.

What condition is US 270 over Lake Hamilton in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does US 270 over Lake Hamilton carry?

About 8,700 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is US 270 over Lake Hamilton?

The structure is 592 ft (180.4 m) long with a longest span of 170 ft (51.8 m) and a deck 75 ft wide.

Who owns US 270 over Lake Hamilton?

It is owned by the State Highway Agency.