US Bridges

US0061-X over Monte Sano Bayou

Fair

East Baton Rouge Parish, Louisiana · 1.04 M. N of LA 3164 · Structure no. 611700190102041

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
6,150
2021 count
Owner
State
State Highway Agency

About this bridge

US0061-X over Monte Sano Bayou is a concrete slab carrying US0061-X over Monte Sano Bayou in East Baton Rouge Parish, Louisiana. It was built in 1971, so it is 54 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 6,150 vehicles a day, roughly 7% of them trucks, projected to reach 6,765 by 2041. The structure is 140 ft (42.7 m) long and 66 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS0061-X
CrossesMonte Sano Bayou
Location1.04 M. N of LA 3164
RouteU.S. Route 61
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.50249, -91.17002
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width66 ft (20 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,150 (2021)
Projected traffic6,765 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US0061-X over Monte Sano Bayou built?

It was built in 1971, making it 54 years old in 2025.

What condition is US0061-X over Monte Sano Bayou 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 July 2024.

How much traffic does US0061-X over Monte Sano Bayou carry?

About 6,150 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is US0061-X over Monte Sano Bayou?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 66 ft wide.

Who owns US0061-X over Monte Sano Bayou?

It is owned by the State Highway Agency.