US Bridges

Arkadelphia RD over Six Mile Creek

PoorPosted for load

Allen Parish, Louisiana · 4.0 Mi. N. of LA 112 · Structure no. 070230523925551

Built
1977
48 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
95 ft
5 main spans
Daily traffic
260
2019 count
Owner
County
County Highway Agency

About this bridge

Arkadelphia RD over Six Mile Creek is a wood or timber stringer/multi-beam or girder carrying Arkadelphia RD over Six Mile Creek in Allen Parish, Louisiana. It was built in 1977, so it is 48 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 260 vehicles a day, projected to reach 286 by 2039. The structure is 95 ft (29 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesArkadelphia RD
CrossesSix Mile Creek
Location4.0 Mi. N. of LA 112
RouteCounty Highway 0
Coordinates30.86955, -92.92546
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating6.2 US tons
Inventory rating3.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 10
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2019)
Projected traffic286 by 2039
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$340,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Arkadelphia RD over Six Mile Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Arkadelphia RD over Six Mile Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Arkadelphia RD over Six Mile Creek carry?

About 260 vehicles per day (2019 count).

How long is Arkadelphia RD over Six Mile Creek?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns Arkadelphia RD over Six Mile Creek?

It is owned by the County Highway Agency.