US Bridges

Stillhouse RD over Stillhouse Bayou

Fair

Bossier Parish, Louisiana · 3.0 MI N. of LA 537 · Structure no. 040832594934591

Built
2005
20 years old
Condition
Fair
inspected December 2024
Type
Culvert
Steel
Length
41 ft
4 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Stillhouse RD over Stillhouse Bayou is a steel culvert carrying Stillhouse RD over Stillhouse Bayou in Bossier Parish, Louisiana. It was built in 2005, so it is 20 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 250 vehicles a day, projected to reach 275 by 2040. The structure is 41 ft (12.5 m) long and 98 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesStillhouse RD
CrossesStillhouse Bayou
Location3.0 MI N. of LA 537
RouteCounty Highway 0
CountyBossier Parish
StateLouisiana
Coordinates32.99031, -93.7661
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span6 ft (1.8 m)
Deck width98 ft (29.9 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic275 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$244,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Stillhouse RD over Stillhouse Bayou built?

It was built in 2005, making it 20 years old in 2025.

What condition is Stillhouse RD over Stillhouse Bayou 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 December 2024.

How much traffic does Stillhouse RD over Stillhouse Bayou carry?

About 250 vehicles per day (2020 count).

How long is Stillhouse RD over Stillhouse Bayou?

The structure is 41 ft (12.5 m) long with a longest span of 6 ft (1.8 m) and a deck 98 ft wide.

Who owns Stillhouse RD over Stillhouse Bayou?

It is owned by the County Highway Agency.