US Bridges

LA0063 over Mcquinney Bayou R

Fair

East Feliciana Parish, Louisiana · 4.4 M NW of LA 37&LA 63 · Structure no. 611902590104761

Built
1957
68 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
1,584
2021 count
Owner
State
State Highway Agency

About this bridge

LA0063 over Mcquinney Bayou R is a wood or timber stringer/multi-beam or girder carrying LA0063 over Mcquinney Bayou R in East Feliciana Parish, Louisiana. It was built in 1957, so it is 68 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 1,584 vehicles a day, roughly 10% of them trucks, projected to reach 1,742 by 2041. The structure is 58 ft (17.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0063
CrossesMcquinney Bayou R
Location4.4 M NW of LA 37&LA 63
RouteState Highway 63
CountyEast Feliciana Parish
StateLouisiana
Coordinates30.78542, -90.89309
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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,584 (2021)
Projected traffic1,742 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.1 mi (5 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$315,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0063 over Mcquinney Bayou R built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0063 over Mcquinney Bayou R 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 January 2023.

How much traffic does LA0063 over Mcquinney Bayou R carry?

About 1,584 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0063 over Mcquinney Bayou R?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns LA0063 over Mcquinney Bayou R?

It is owned by the State Highway Agency.