US Bridges

Alexander Ave over Monte Sano Bayou

Good

East Baton Rouge Parish, Louisiana · 0.7 M W of LA 67 · Structure no. 611730302910971

Built
1985
40 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
108 ft
6 main spans
Daily traffic
200
2019 count
Owner
County
County Highway Agency

About this bridge

Alexander Ave over Monte Sano Bayou is a concrete slab carrying Alexander Ave over Monte Sano Bayou in East Baton Rouge Parish, Louisiana. It was built in 1985, so it is 40 years old, younger 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 200 vehicles a day, projected to reach 220 by 2039. The structure is 108 ft (32.9 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAlexander Ave
CrossesMonte Sano Bayou
Location0.7 M W of LA 67
RouteCounty Highway 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.50289, -91.16169
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span18 ft (5.5 m)
Deck width35 ft (10.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2019)
Projected traffic220 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Alexander Ave over Monte Sano Bayou built?

It was built in 1985, making it 40 years old in 2025.

What condition is Alexander Ave 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 May 2023.

How much traffic does Alexander Ave over Monte Sano Bayou carry?

About 200 vehicles per day (2019 count).

How long is Alexander Ave over Monte Sano Bayou?

The structure is 108 ft (32.9 m) long with a longest span of 18 ft (5.5 m) and a deck 35 ft wide.

Who owns Alexander Ave over Monte Sano Bayou?

It is owned by the County Highway Agency.