US Bridges

Courtney RD over Middle Colyell Creek

FairPosted for load

Livingston Parish, Louisiana · 5.2 Miles Northeast of LA · Structure no. 623200000101032

Built
2010
15 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
70 ft
4 main spans
Daily traffic
350
2022 count
Owner
County
County Highway Agency

About this bridge

Courtney RD over Middle Colyell Creek is a wood or timber stringer/multi-beam or girder carrying Courtney RD over Middle Colyell Creek in Livingston Parish, Louisiana. It was built in 2010, so it is 15 years old, younger 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 350 vehicles a day, projected to reach 385 by 2042. The structure is 70 ft (21.3 m) long and 19 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCourtney RD
CrossesMiddle Colyell Creek
Location5.2 Miles Northeast of LA
RouteCounty Highway 0
CountyLivingston Parish
StateLouisiana
Coordinates30.53346, -90.84763
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23 US tons
Inventory rating16 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 15
Structure length70 ft (21.3 m)
Longest span20 ft (6.1 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2022)
Projected traffic385 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Courtney RD over Middle Colyell Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is Courtney RD over Middle Colyell 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 September 2024.

How much traffic does Courtney RD over Middle Colyell Creek carry?

About 350 vehicles per day (2022 count).

How long is Courtney RD over Middle Colyell Creek?

The structure is 70 ft (21.3 m) long with a longest span of 20 ft (6.1 m) and a deck 19 ft wide.

Who owns Courtney RD over Middle Colyell Creek?

It is owned by the County Highway Agency.