US Bridges

N4100 over Opossum Creek Trib.

Fair

Nowata County, Oklahoma · 2.8W 3.2N JCT US169/SH10 · Structure no. 281130000000000

Built
2008
17 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4100 over Opossum Creek Trib. is a concrete culvert carrying N4100 over Opossum Creek Trib. in Nowata County, Oklahoma. It was built in 2008, so it is 17 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 30 ft (9 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesN4100
CrossesOpossum Creek Trib.
Location2.8W 3.2N JCT US169/SH10
RouteCounty Highway N4100
CountyNowata County
StateOklahoma
Coordinates36.96056, -95.67861
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89.3 US tons
Inventory rating53.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length30 ft (9 m)
Longest span14 ft (4.3 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4100 over Opossum Creek Trib. built?

It was built in 2008, making it 17 years old in 2025.

What condition is N4100 over Opossum Creek Trib. 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 May 2024.

How much traffic does N4100 over Opossum Creek Trib. carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4100 over Opossum Creek Trib.?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.3 m) and a deck 42 ft wide.

Who owns N4100 over Opossum Creek Trib.?

It is owned by the County Highway Agency.