US Bridges

N3550 over Creek

Good

Seminole County, Oklahoma · .3 S & 1 W of Seminole · Structure no. 282340000000000

Built
2005
20 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N3550 over Creek is a prestressed concrete stringer/multi-beam or girder carrying N3550 over Creek in Seminole County, Oklahoma. It was built in 2005, so it is 20 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 108 ft (32.8 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN3550
CrossesCreek
Location.3 S & 1 W of Seminole
RouteCounty Highway N3550
Coordinates35.21914, -96.68864
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length108 ft (32.8 m)
Longest span105 ft (32 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N3550 over Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is N3550 over 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 July 2023.

How much traffic does N3550 over Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3550 over Creek?

The structure is 108 ft (32.8 m) long with a longest span of 105 ft (32 m) and a deck 34 ft wide.

Who owns N3550 over Creek?

It is owned by the County Highway Agency.