US Bridges

Rocky Springs RD over Bayou Dupont

PoorPosted for load

Sabine Parish, Louisiana · Rocky Springs Road · Structure no. 084331411932461

Built
1955
70 years old
Condition
Poor
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
78 ft
4 main spans
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

Rocky Springs RD over Bayou Dupont is a wood or timber stringer/multi-beam or girder carrying Rocky Springs RD over Bayou Dupont in Sabine Parish, Louisiana. It was built in 1955, so it is 70 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 4 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 75 vehicles a day, projected to reach 82 by 2042. The structure is 78 ft (23.8 m) long and 20 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesRocky Springs RD
CrossesBayou Dupont
LocationRocky Springs Road
RouteCounty Highway 0
CountySabine Parish
StateLouisiana
Coordinates31.68522, -93.4107
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating21.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 10
Structure length78 ft (23.8 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic82 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$280,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rocky Springs RD over Bayou Dupont built?

It was built in 1955, making it 70 years old in 2025.

What condition is Rocky Springs RD over Bayou Dupont 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 January 2023.

How much traffic does Rocky Springs RD over Bayou Dupont carry?

About 75 vehicles per day (2022 count).

How long is Rocky Springs RD over Bayou Dupont?

The structure is 78 ft (23.8 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Rocky Springs RD over Bayou Dupont?

It is owned by the County Highway Agency.