US Bridges

US0061 over Monte Sano Bayou

Good

East Baton Rouge Parish, Louisiana · 0.3 M W of US 61&LA 67 · Structure no. 611700079009813

Built
1976
49 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
3 main spans
Daily traffic
713
2021 count
Owner
State
State Highway Agency

About this bridge

US0061 over Monte Sano Bayou is a prestressed concrete stringer/multi-beam or girder carrying US0061 over Monte Sano Bayou in East Baton Rouge Parish, Louisiana. It was built in 1976, so it is 49 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 713 vehicles a day, roughly 11% of them trucks, projected to reach 784 by 2041. The structure is 134 ft (40.8 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0061
CrossesMonte Sano Bayou
Location0.3 M W of US 61&LA 67
RouteU.S. Route 61
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.50979, -91.15485
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span64 ft (19.5 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic713 (2021)
Projected traffic784 by 2041
Trucks11%
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

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$639,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US0061 over Monte Sano Bayou built?

It was built in 1976, making it 49 years old in 2025.

What condition is US0061 over Monte Sano Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does US0061 over Monte Sano Bayou carry?

About 713 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is US0061 over Monte Sano Bayou?

The structure is 134 ft (40.8 m) long with a longest span of 64 ft (19.5 m) and a deck 30 ft wide.

Who owns US0061 over Monte Sano Bayou?

It is owned by the State Highway Agency.