US Bridges

US-70/SEC-17/L4.14 over Big Robe Bayou

Good

Monroe County, Arkansas · 4.14 MI E Prairie CO Line · Structure no. 000000000006970

Built
2005
20 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
370 ft
8 main spans
Daily traffic
1,100
2018 count
Owner
State
State Highway Agency

About this bridge

US-70/SEC-17/L4.14 over Big Robe Bayou is a steel continuous stringer/multi-beam or girder carrying US-70/SEC-17/L4.14 over Big Robe Bayou in Monroe County, Arkansas. It was built in 2005, so it is 20 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 1,100 vehicles a day, roughly 10% of them trucks, projected to reach 1,167 by 2028. The structure is 370 ft (112.8 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS-70/SEC-17/L4.14
CrossesBig Robe Bayou
Location4.14 MI E Prairie CO Line
RouteU.S. Route 70
CountyMonroe County
StateArkansas
Coordinates34.83857, -91.30524
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum 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

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length370 ft (112.8 m)
Longest span51 ft (15.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2018)
Projected traffic1,167 by 2028
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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-70/SEC-17/L4.14 over Big Robe Bayou built?

It was built in 2005, making it 20 years old in 2025.

What condition is US-70/SEC-17/L4.14 over Big Robe Bayou 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 May 2023.

How much traffic does US-70/SEC-17/L4.14 over Big Robe Bayou carry?

About 1,100 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is US-70/SEC-17/L4.14 over Big Robe Bayou?

The structure is 370 ft (112.8 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.

Who owns US-70/SEC-17/L4.14 over Big Robe Bayou?

It is owned by the State Highway Agency.