US Bridges

Siloam Church RD over Big Creek

Fair

Jackson Parish, Louisiana · 1.5 MI East of LA 809 · Structure no. 052532103923901

Built
1986
39 years old
Condition
Fair
inspected February 2024
Type
Culvert
Steel
Length
34 ft
3 main spans
Daily traffic
48
2020 count
Owner
County
County Highway Agency

About this bridge

Siloam Church RD over Big Creek is a steel culvert carrying Siloam Church RD over Big Creek in Jackson Parish, Louisiana. It was built in 1986, so it is 39 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 5 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 48 vehicles a day, projected to reach 52 by 2040. The structure is 34 ft (10.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSiloam Church RD
CrossesBig Creek
Location1.5 MI East of LA 809
RouteCounty Highway 0
CountyJackson Parish
StateLouisiana
Coordinates32.17156, -92.65191
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span9 ft (2.7 m)
Deck width40 ft (12.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2020)
Projected traffic52 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Siloam Church RD over Big Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Siloam Church RD over Big Creek 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 Siloam Church RD over Big Creek carry?

About 48 vehicles per day (2020 count).

How long is Siloam Church RD over Big Creek?

The structure is 34 ft (10.4 m) long with a longest span of 9 ft (2.7 m) and a deck 40 ft wide.

Who owns Siloam Church RD over Big Creek?

It is owned by the County Highway Agency.