US Bridges

Bear Knoll RD over Dugdemona River

Fair

Jackson Parish, Louisiana · 2.7 Mi. Nne Int. 300 · Structure no. 052532200924421

Built
1983
42 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
210 ft
11 main spans
Daily traffic
410
2020 count
Owner
County
County Highway Agency

About this bridge

Bear Knoll RD over Dugdemona River is a concrete slab carrying Bear Knoll RD over Dugdemona River in Jackson Parish, Louisiana. It was built in 1983, so it is 42 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 410 vehicles a day, projected to reach 451 by 2040. The structure is 210 ft (64 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBear Knoll RD
CrossesDugdemona River
Location2.7 Mi. Nne Int. 300
RouteCounty Highway 0
CountyJackson Parish
StateLouisiana
Coordinates32.33222, -92.7384
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans11
Design loadHS 20
Structure length210 ft (64 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2020)
Projected traffic451 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bear Knoll RD over Dugdemona River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Bear Knoll RD over Dugdemona River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does Bear Knoll RD over Dugdemona River carry?

About 410 vehicles per day (2020 count).

How long is Bear Knoll RD over Dugdemona River?

The structure is 210 ft (64 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Bear Knoll RD over Dugdemona River?

It is owned by the County Highway Agency.