US Bridges

SH 18-04-LM 13.43 over Big Bay

Good

Craighead County, Arkansas · 0.2 MI W JCT SH 158 · Structure no. 000000000006986

Built
2008
17 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Concrete
Length
90 ft
3 main spans
Daily traffic
10,000
2018 count
Owner
State
State Highway Agency

About this bridge

SH 18-04-LM 13.43 over Big Bay is a concrete tee beam carrying SH 18-04-LM 13.43 over Big Bay in Craighead 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 10,000 vehicles a day, roughly 11% of them trucks, projected to reach 10,870 by 2028. The structure is 90 ft (27.4 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSH 18-04-LM 13.43
CrossesBig Bay
Location0.2 MI W JCT SH 158
RouteState Highway 18
CountyCraighead County
StateArkansas
Coordinates35.82281, -90.48605
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
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 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

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width78 ft (23.8 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2018)
Projected traffic10,870 by 2028
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 SH 18-04-LM 13.43 over Big Bay built?

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

What condition is SH 18-04-LM 13.43 over Big Bay 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 July 2024.

How much traffic does SH 18-04-LM 13.43 over Big Bay carry?

About 10,000 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is SH 18-04-LM 13.43 over Big Bay?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 78 ft wide.

Who owns SH 18-04-LM 13.43 over Big Bay?

It is owned by the State Highway Agency.