US Bridges

Dyer RD over Comite River

Good

East Baton Rouge Parish, Louisiana · 1.7 Mi. E of LA 67 · Structure no. 611730357910571

Built
2002
23 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
490 ft
7 main spans
Daily traffic
1,636
2019 count
Owner
County
County Highway Agency

About this bridge

Dyer RD over Comite River is a prestressed concrete stringer/multi-beam or girder carrying Dyer RD over Comite River in East Baton Rouge Parish, Louisiana. It was built in 2002, so it is 23 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 1,636 vehicles a day, projected to reach 1,799 by 2039. The structure is 490 ft (149.4 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesDyer RD
CrossesComite River
Location1.7 Mi. E of LA 67
RouteCounty Highway 0
Coordinates30.59736, -91.09326
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.9 US tons
Inventory rating22.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length490 ft (149.4 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,636 (2019)
Projected traffic1,799 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Dyer RD over Comite River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Dyer RD over Comite River 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 Dyer RD over Comite River carry?

About 1,636 vehicles per day (2019 count).

How long is Dyer RD over Comite River?

The structure is 490 ft (149.4 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns Dyer RD over Comite River?

It is owned by the County Highway Agency.