US Bridges

Lemon B RD over Drainage Bayou

PoorPosted for load

East Baton Rouge Parish, Louisiana · 2 Mi. S. of LA 412 · Structure no. 611730424910601

Built
1980
45 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
35 ft
2 main spans
Daily traffic
538
2019 count
Owner
County
County Highway Agency

About this bridge

Lemon B RD over Drainage Bayou is a wood or timber stringer/multi-beam or girder carrying Lemon B RD over Drainage Bayou in East Baton Rouge 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 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 538 vehicles a day, projected to reach 591 by 2039. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLemon B RD
CrossesDrainage Bayou
Location2 Mi. S. of LA 412
RouteCounty Highway 0
Coordinates30.70509, -91.10102
Functional classRural Local

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionSeptember 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating27.4 US tons
Inventory rating23.6 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 10
Structure length35 ft (10.7 m)
Longest span17 ft (5.2 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic538 (2019)
Projected traffic591 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lemon B RD over Drainage Bayou built?

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

What condition is Lemon B RD over Drainage Bayou 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 September 2023.

How much traffic does Lemon B RD over Drainage Bayou carry?

About 538 vehicles per day (2019 count).

How long is Lemon B RD over Drainage Bayou?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m) and a deck 20 ft wide.

Who owns Lemon B RD over Drainage Bayou?

It is owned by the County Highway Agency.