US Bridges

N. Cswy Appr S.B. over Monroe ST

Good

St. Tammany Parish, Louisiana · 1.4 MI S of US 190 · Structure no. 625230222900562

Built
1993
32 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
2,124 ft
14 main spans
Daily traffic
1,600
1995 count
Owner
Toll Authority
Local Toll Authority

About this bridge

N. Cswy Appr S.B. over Monroe ST is a concrete continuous box beam or girders - multiple carrying N. Cswy Appr S.B. over Monroe ST in St. Tammany Parish, Louisiana. It was built in 1993, so it is 32 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 1,600 vehicles a day, projected to reach 1,760 by 2015. The structure is 2,124 ft (647.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN. Cswy Appr S.B.
CrossesMonroe ST
Location1.4 MI S of US 190
RouteCounty Highway 0
CountySt. Tammany Parish
StateLouisiana
Coordinates30.37284, -90.09259
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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating32.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans14 (+17 approach)
Design loadHS 20
Structure length2,124 ft (647.4 m)
Longest span140 ft (42.7 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic1,600 (1995)
Projected traffic1,760 by 2015
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N. Cswy Appr S.B. over Monroe ST built?

It was built in 1993, making it 32 years old in 2025.

What condition is N. Cswy Appr S.B. over Monroe ST 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 October 2024.

How much traffic does N. Cswy Appr S.B. over Monroe ST carry?

About 1,600 vehicles per day (1995 count).

How long is N. Cswy Appr S.B. over Monroe ST?

The structure is 2,124 ft (647.4 m) long with a longest span of 140 ft (42.7 m) and a deck 31 ft wide.

Who owns N. Cswy Appr S.B. over Monroe ST?

It is owned by the Local Toll Authority.