US Bridges

US 412-09-LM 6.05 over Mud Slough

Good

Greene County, Arkansas · 2.20 MI W of Mo State LN · Structure no. 000000000007041

Built
2008
17 years old
Condition
Good
inspected September 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
3 main spans
Daily traffic
8,700
2018 count
Owner
State
State Highway Agency

About this bridge

US 412-09-LM 6.05 over Mud Slough is a steel stringer/multi-beam or girder carrying US 412-09-LM 6.05 over Mud Slough in Greene County, Arkansas. It was built in 2008, so it is 17 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,700 vehicles a day, roughly 11% of them trucks, projected to reach 10,307 by 2025. The structure is 91 ft (27.7 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 412-09-LM 6.05
CrossesMud Slough
Location2.20 MI W of Mo State LN
RouteU.S. Route 412
Coordinates36.05236, -90.38074
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span34 ft (10.4 m)
Deck width78 ft (23.8 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2018)
Projected traffic10,307 by 2025
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 412-09-LM 6.05 over Mud Slough built?

It was built in 2008, making it 17 years old in 2025.

What condition is US 412-09-LM 6.05 over Mud Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

How much traffic does US 412-09-LM 6.05 over Mud Slough carry?

About 8,700 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is US 412-09-LM 6.05 over Mud Slough?

The structure is 91 ft (27.7 m) long with a longest span of 34 ft (10.4 m) and a deck 78 ft wide.

Who owns US 412-09-LM 6.05 over Mud Slough?

It is owned by the State Highway Agency.