US Bridges

Houston River RD over Coon Gully

Good

Calcasieu Parish, Louisiana · 0.70 MI W of LA 27 · Structure no. 071000000070249

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
3,393
2021 count
Owner
County
County Highway Agency

About this bridge

Houston River RD over Coon Gully is a concrete slab carrying Houston River RD over Coon Gully in Calcasieu Parish, Louisiana. It was built in 2017, so it is 8 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,393 vehicles a day, projected to reach 3,732 by 2041. The structure is 120 ft (36.6 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHouston River RD
CrossesCoon Gully
Location0.70 MI W of LA 27
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.28576, -93.36848
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,393 (2021)
Projected traffic3,732 by 2041
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Houston River RD over Coon Gully built?

It was built in 2017, making it 8 years old in 2025.

What condition is Houston River RD over Coon Gully in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Houston River RD over Coon Gully carry?

About 3,393 vehicles per day (2021 count).

How long is Houston River RD over Coon Gully?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns Houston River RD over Coon Gully?

It is owned by the County Highway Agency.