US Bridges

LA0550 over Lion Creek

PoorPosted for load

Union Parish, Louisiana · 8.9 MI North of LA 15 · Structure no. 055603110208921

Built
1950
75 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
59 ft
3 main spans
Daily traffic
464
2021 count
Owner
State
State Highway Agency

About this bridge

LA0550 over Lion Creek is a wood or timber stringer/multi-beam or girder carrying LA0550 over Lion Creek in Union Parish, Louisiana. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 464 vehicles a day, roughly 19% of them trucks, projected to reach 510 by 2041. The structure is 59 ft (18 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0550
CrossesLion Creek
Location8.9 MI North of LA 15
RouteState Highway 550
Coordinates33.01149, -92.4969
Functional classRural Minor Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28 US tons
Inventory rating20 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 10
Structure length59 ft (18 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic464 (2021)
Projected traffic510 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$319,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0550 over Lion Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is LA0550 over Lion Creek 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 February 2024.

How much traffic does LA0550 over Lion Creek carry?

About 464 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0550 over Lion Creek?

The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0550 over Lion Creek?

It is owned by the State Highway Agency.