US Bridges

N3740 (lynn Ave) over Bird Creek

FairPosted for load

Osage County, Oklahoma · .5S SH60 1W of SH99 · Structure no. 003290000000000

Built
1912
113 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
166 ft
3 main spans
Daily traffic
1,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3740 (lynn Ave) over Bird Creek is a masonry arch - deck carrying N3740 (lynn Ave) over Bird Creek in Osage County, Oklahoma. It was built in 1912, so it is 113 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,600 by 2042. The structure is 166 ft (50.6 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN3740 (lynn Ave)
CrossesBird Creek
Location.5S SH60 1W of SH99
RouteCounty Highway N3740
CountyOsage County
StateOklahoma
Coordinates36.65952, -96.33177
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length166 ft (50.6 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic1,600 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$646,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3740 (lynn Ave) over Bird Creek built?

It was built in 1912, making it 113 years old in 2025.

What condition is N3740 (lynn Ave) over Bird 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 April 2024.

How much traffic does N3740 (lynn Ave) over Bird Creek carry?

About 1,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3740 (lynn Ave) over Bird Creek?

The structure is 166 ft (50.6 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns N3740 (lynn Ave) over Bird Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.