US Bridges

LA0174 over Bayou Pierre

Fair

Red River Parish, Louisiana · 2.31 MI West of LA 1 · Structure no. 044101120700001

Built
1980
45 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
401 ft
1 main span
Daily traffic
890
2016 count
Owner
State
State Highway Agency

About this bridge

LA0174 over Bayou Pierre is a steel stringer/multi-beam or girder carrying LA0174 over Bayou Pierre in Red River Parish, Louisiana. It was built in 1980, so it is 45 years old, older 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 890 vehicles a day, roughly 19% of them trucks, projected to reach 979 by 2036. The structure is 401 ft (122.2 m) long and 33 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesLA0174
CrossesBayou Pierre
Location2.31 MI West of LA 1
RouteState Highway 174
Coordinates31.8954, -93.3434
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating37 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length401 ft (122.2 m)
Longest span100 ft (30.5 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic890 (2016)
Projected traffic979 by 2036
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0174 over Bayou Pierre built?

It was built in 1980, making it 45 years old in 2025.

What condition is LA0174 over Bayou Pierre 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 June 2023.

How much traffic does LA0174 over Bayou Pierre carry?

About 890 vehicles per day (2016 count), of which roughly 19% are trucks.

How long is LA0174 over Bayou Pierre?

The structure is 401 ft (122.2 m) long with a longest span of 100 ft (30.5 m) and a deck 33 ft wide.

Who owns LA0174 over Bayou Pierre?

It is owned by the State Highway Agency.