US Bridges

Old Columbia RD over Ard Creek Bridge

Good

Washington Parish, Louisiana · 1.6 MI N. of HWY 438 · Structure no. 625930589894631

Built
1996
29 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
334
2020 count
Owner
County
County Highway Agency

About this bridge

Old Columbia RD over Ard Creek Bridge is a concrete slab carrying Old Columbia RD over Ard Creek Bridge in Washington Parish, Louisiana. It was built in 1996, so it is 29 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.

It carries about 334 vehicles a day, projected to reach 367 by 2040. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesOld Columbia RD
CrossesArd Creek Bridge
Location1.6 MI N. of HWY 438
RouteCounty Highway 0
Coordinates30.98132, -89.77229
Functional classRural Minor Arterial

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic334 (2020)
Projected traffic367 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Old Columbia RD over Ard Creek Bridge built?

It was built in 1996, making it 29 years old in 2025.

What condition is Old Columbia RD over Ard Creek Bridge 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 January 2024.

How much traffic does Old Columbia RD over Ard Creek Bridge carry?

About 334 vehicles per day (2020 count).

How long is Old Columbia RD over Ard Creek Bridge?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Old Columbia RD over Ard Creek Bridge?

It is owned by the County Highway Agency.