US Bridges

Kirby RD over Creek

FairPosted for load

La Salle Parish, Louisiana · 1 Mile NE of LA 459 · Structure no. 583031435920501

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
44 ft
3 main spans
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Kirby RD over Creek is a wood or timber stringer/multi-beam or girder carrying Kirby RD over Creek in La Salle Parish, Louisiana. It was built in 1975, so it is 50 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, projected to reach 110 by 2040. The structure is 44 ft (13.4 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesKirby RD
CrossesCreek
Location1 Mile NE of LA 459
RouteCounty Highway 0
CountyLa Salle Parish
StateLouisiana
Coordinates31.72502, -92.08588
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating17 US tons
Inventory rating12 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 10
Structure length44 ft (13.4 m)
Longest span14 ft (4.3 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic110 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$180,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kirby RD over Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Kirby RD over Creek 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 February 2024.

How much traffic does Kirby RD over Creek carry?

About 100 vehicles per day (2020 count).

How long is Kirby RD over Creek?

The structure is 44 ft (13.4 m) long with a longest span of 14 ft (4.3 m) and a deck 16 ft wide.

Who owns Kirby RD over Creek?

It is owned by the County Highway Agency.