US Bridges

W. 28th Ave. over Mile Branch

Good

St. Tammany Parish, Louisiana · 1.0 Miles North of North · Structure no. 625200000620269

Built
2007
18 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
350
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

W. 28th Ave. over Mile Branch is a concrete culvert carrying W. 28th Ave. over Mile Branch in St. Tammany Parish, Louisiana. It was built in 2007, so it is 18 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 350 vehicles a day, roughly 1% of them trucks, projected to reach 385 by 2031. The structure is 24 ft (7.3 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW. 28th Ave.
CrossesMile Branch
Location1.0 Miles North of North
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.48666, -90.10526
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width36 ft (11.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2011)
Projected traffic385 by 2031
Trucks1%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W. 28th Ave. over Mile Branch built?

It was built in 2007, making it 18 years old in 2025.

What condition is W. 28th Ave. over Mile Branch 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 January 2024.

How much traffic does W. 28th Ave. over Mile Branch carry?

About 350 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is W. 28th Ave. over Mile Branch?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 36 ft wide.

Who owns W. 28th Ave. over Mile Branch?

It is owned by the City or Municipal Highway Agency.