US Bridges

Smithbrook RD over Cooper Creek

Good

Vernon Parish, Louisiana · 0.13 M. N. of JCT LA 8 · Structure no. 085831097931151

Built
1989
36 years old
Condition
Good
inspected March 2023
Type
Culvert
Steel
Length
56 ft
3 main spans
Daily traffic
—
2016 count
Owner
County
County Highway Agency

About this bridge

Smithbrook RD over Cooper Creek is a steel culvert carrying Smithbrook RD over Cooper Creek in Vernon Parish, Louisiana. It was built in 1989, so it is 36 years old, younger than the Louisiana average of 43 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.

No traffic count is recorded. The structure is 56 ft (17.1 m) long and 75 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSmithbrook RD
CrossesCooper Creek
Location0.13 M. N. of JCT LA 8
RouteCounty Highway 0
Coordinates31.16164, -93.1921
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span14 ft (4.3 m)
Deck width75 ft (22.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Smithbrook RD over Cooper Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Smithbrook RD over Cooper Creek 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 March 2023.

How much traffic does Smithbrook RD over Cooper Creek carry?

No traffic count is recorded for this structure.

How long is Smithbrook RD over Cooper Creek?

The structure is 56 ft (17.1 m) long with a longest span of 14 ft (4.3 m) and a deck 75 ft wide.

Who owns Smithbrook RD over Cooper Creek?

It is owned by the County Highway Agency.