US Bridges

N3705 over Creek

PoorPosted for load

Osage County, Oklahoma · 1.5S&.5W of JCT 99 & 20 · Structure no. 102910000000000

Built
1945
80 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
416
2022 count
Owner
County
County Highway Agency

About this bridge

N3705 over Creek is a steel stringer/multi-beam or girder carrying N3705 over Creek in Osage County, Oklahoma. It was built in 1945, so it is 80 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 416 vehicles a day, roughly 10% of them trucks, projected to reach 666 by 2042. The structure is 50 ft (15.2 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesN3705
CrossesCreek
Location1.5S&.5W of JCT 99 & 20
RouteCounty Highway N3705
Coordinates36.39502, -96.39839
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating30.6 US tons
Inventory rating18.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span39 ft (11.9 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic416 (2022)
Projected traffic666 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$350,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3705 over Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is N3705 over Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does N3705 over Creek carry?

About 416 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3705 over Creek?

The structure is 50 ft (15.2 m) long with a longest span of 39 ft (11.9 m) and a deck 27 ft wide.

Who owns N3705 over Creek?

It is owned by the County Highway Agency.