US Bridges

Harmony RD over Mckims Creek

Good

Natchitoches Parish, Louisiana · 1.0 Mile North of LA 478 · Structure no. 083531352930911

Built
1999
26 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
114 ft
6 main spans
Daily traffic
54
2022 count
Owner
County
County Highway Agency

About this bridge

Harmony RD over Mckims Creek is a concrete slab carrying Harmony RD over Mckims Creek in Natchitoches Parish, Louisiana. It was built in 1999, so it is 26 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 54 vehicles a day, projected to reach 59 by 2042. The structure is 114 ft (34.7 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesHarmony RD
CrossesMckims Creek
Location1.0 Mile North of LA 478
RouteCounty Highway 0
Coordinates31.58792, -93.1513
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (2022)
Projected traffic59 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Harmony RD over Mckims Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Harmony RD over Mckims Creek 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 2023.

How much traffic does Harmony RD over Mckims Creek carry?

About 54 vehicles per day (2022 count).

How long is Harmony RD over Mckims Creek?

The structure is 114 ft (34.7 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Harmony RD over Mckims Creek?

It is owned by the County Highway Agency.