US Bridges

Common ST over Drainage Canal

Poor

Calcasieu Parish, Louisiana · 0.4 Mi. N. of 12th St. · Structure no. 071030131931281

Built
1928
97 years old
Condition
Poor
inspected December 2023
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
3,974
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Common ST over Drainage Canal is a concrete culvert carrying Common ST over Drainage Canal in Calcasieu Parish, Louisiana. It was built in 1928, so it is 97 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.

It carries about 3,974 vehicles a day, projected to reach 4,371 by 2039. The structure is 35 ft (10.7 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCommon ST
CrossesDrainage Canal
Location0.4 Mi. N. of 12th St.
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.21831, -93.21404
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span12 ft (3.7 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,974 (2019)
Projected traffic4,371 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$210,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Common ST over Drainage Canal built?

It was built in 1928, making it 97 years old in 2025.

What condition is Common ST over Drainage Canal 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 December 2023.

How much traffic does Common ST over Drainage Canal carry?

About 3,974 vehicles per day (2019 count).

How long is Common ST over Drainage Canal?

The structure is 35 ft (10.7 m) long with a longest span of 12 ft (3.7 m) and a deck 42 ft wide.

Who owns Common ST over Drainage Canal?

It is owned by the City or Municipal Highway Agency.