US Bridges

N3980 over Mill Creek

Good

McIntosh County, Oklahoma · South Edge of Vernon · Structure no. 276420000000000

Built
2012
13 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
80
2022 count
Owner
County
County Highway Agency

About this bridge

N3980 over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying N3980 over Mill Creek in McIntosh County, Oklahoma. It was built in 2012, so it is 13 years old, younger than the Oklahoma average of 47.8 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 80 vehicles a day, roughly 15% of them trucks, projected to reach 128 by 2042. The structure is 88 ft (26.7 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN3980
CrossesMill Creek
LocationSouth Edge of Vernon
RouteCounty Highway N3980
Coordinates35.21111, -95.92722
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.1 US tons
Inventory rating58 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length88 ft (26.7 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2022)
Projected traffic128 by 2042
Trucks15%
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 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 N3980 over Mill Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is N3980 over Mill 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 September 2023.

How much traffic does N3980 over Mill Creek carry?

About 80 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N3980 over Mill Creek?

The structure is 88 ft (26.7 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns N3980 over Mill Creek?

It is owned by the County Highway Agency.