US Bridges

N3550 over Crystal Creek

Fair

Pawnee County, Oklahoma · .2S 1.7E .3N of Skedee · Structure no. 265990000000000

Built
2002
23 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

N3550 over Crystal Creek is a prestressed concrete stringer/multi-beam or girder carrying N3550 over Crystal Creek in Pawnee County, Oklahoma. It was built in 2002, so it is 23 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 75 vehicles a day, roughly 15% of them trucks, projected to reach 120 by 2042. The structure is 101 ft (30.8 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesN3550
CrossesCrystal Creek
Location.2S 1.7E .3N of Skedee
RouteCounty Highway N3550
CountyPawnee County
StateOklahoma
Coordinates36.3813, -96.67435
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span98 ft (30 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic120 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$519,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3550 over Crystal Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is N3550 over Crystal 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 August 2023.

How much traffic does N3550 over Crystal Creek carry?

About 75 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N3550 over Crystal Creek?

The structure is 101 ft (30.8 m) long with a longest span of 98 ft (30 m) and a deck 27 ft wide.

Who owns N3550 over Crystal Creek?

It is owned by the County Highway Agency.