US Bridges

Rt Nn S over Lateral Dtch No 75

Good

Dunklin County, Missouri · S 10 T 18 N R 10 E · Structure no. 4084

Built
1993
32 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
2,280
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Nn S over Lateral Dtch No 75 is a concrete continuous culvert carrying Rt Nn S over Lateral Dtch No 75 in Dunklin County, Missouri. It was built in 1993, so it is 32 years old, younger than the Missouri average of 45.1 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 2,280 vehicles a day, roughly 7% of them trucks, projected to reach 3,192 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesRt Nn S
CrossesLateral Dtch No 75
LocationS 10 T 18 N R 10 E
RouteState Highway 0NN
CountyDunklin County
StateMissouri
Coordinates36.20618, -89.96057
Functional classRural Major Collector

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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating82.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,280 (2024)
Projected traffic3,192 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Nn S over Lateral Dtch No 75 built?

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

What condition is Rt Nn S over Lateral Dtch No 75 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 November 2024.

How much traffic does Rt Nn S over Lateral Dtch No 75 carry?

About 2,280 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Rt Nn S over Lateral Dtch No 75?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Rt Nn S over Lateral Dtch No 75?

It is owned by the State Highway Agency.