US Bridges

Dwyer RD over I-510

FairClosed to traffic

Orleans Parish, Louisiana · 0.55M North of US 90 · Structure no. 023604504301402

Built
1992
33 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,418 ft
13 main spans
Daily traffic
17,100
2015 count
Owner
State
State Highway Agency

About this bridge

Dwyer RD over I-510 is a prestressed concrete continuous stringer/multi-beam or girder carrying Dwyer RD over I-510 in Orleans Parish, Louisiana. It was built in 1992, so it is 33 years old, younger 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. Its operating status is: closed to all traffic.

It carries about 17,100 vehicles a day, projected to reach 18,810 by 2035. The structure is 1,418 ft (432.2 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesDwyer RD
CrossesI-510
Location0.55M North of US 90
RouteCounty Highway 0
CountyOrleans Parish
StateLouisiana
Coordinates30.03461, -89.93745
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans13 (+15 approach)
Design loadHS 20
Structure length1,418 ft (432.2 m)
Longest span111 ft (33.8 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,100 (2015)
Projected traffic18,810 by 2035
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$5.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Dwyer RD over I-510 built?

It was built in 1992, making it 33 years old in 2025.

What condition is Dwyer RD over I-510 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 January 2024.

How much traffic does Dwyer RD over I-510 carry?

About 17,100 vehicles per day (2015 count).

How long is Dwyer RD over I-510?

The structure is 1,418 ft (432.2 m) long with a longest span of 111 ft (33.8 m) and a deck 35 ft wide.

Who owns Dwyer RD over I-510?

It is owned by the State Highway Agency.