US Bridges

N3820 over Trib Muddy Boggy Creek

Fair

Coal County, Oklahoma · 6.3 N & .2 E of Coalgate · Structure no. 294330000000000

Built
2009
16 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

N3820 over Trib Muddy Boggy Creek is a concrete culvert carrying N3820 over Trib Muddy Boggy Creek in Coal County, Oklahoma. It was built in 2009, so it is 16 years old, younger than the Oklahoma average of 47.8 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.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2042. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN3820
CrossesTrib Muddy Boggy Creek
Location6.3 N & .2 E of Coalgate
RouteCounty Highway N3820
CountyCoal County
StateOklahoma
Coordinates34.63222, -96.21444
Functional classRural 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic75 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3820 over Trib Muddy Boggy Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is N3820 over Trib Muddy Boggy Creek 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 N3820 over Trib Muddy Boggy Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3820 over Trib Muddy Boggy Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns N3820 over Trib Muddy Boggy Creek?

It is owned by the County Highway Agency.