US Bridges

Highland RD over Drainage Canal

Fair

East Baton Rouge Parish, Louisiana · Log Mile 00.01 · Structure no. 611730216910631

Built
1948
77 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
26 ft
4 main spans
Daily traffic
10,492
2023 count
Owner
County
County Highway Agency

About this bridge

Highland RD over Drainage Canal is a concrete culvert carrying Highland RD over Drainage Canal in East Baton Rouge Parish, Louisiana. It was built in 1948, so it is 77 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 6 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 10,492 vehicles a day, projected to reach 11,541 by 2043. The structure is 26 ft (7.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHighland RD
CrossesDrainage Canal
LocationLog Mile 00.01
RouteCity Street 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.35845, -91.10253
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length26 ft (7.9 m)
Longest span6 ft (1.8 m)
Deck width36 ft (11 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,492 (2023)
Projected traffic11,541 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Highland RD over Drainage Canal built?

It was built in 1948, making it 77 years old in 2025.

What condition is Highland RD over Drainage Canal 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 Highland RD over Drainage Canal carry?

About 10,492 vehicles per day (2023 count).

How long is Highland RD over Drainage Canal?

The structure is 26 ft (7.9 m) long with a longest span of 6 ft (1.8 m) and a deck 36 ft wide.

Who owns Highland RD over Drainage Canal?

It is owned by the County Highway Agency.