US Bridges

N3708 Larkspur LN over Creek

Fair

Bryan County, Oklahoma · .04N of Wilson St. · Structure no. 318540000000000

Built
2008
17 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
57 ft
3 main spans
Daily traffic
100
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3708 Larkspur LN over Creek is a steel culvert carrying N3708 Larkspur LN over Creek in Bryan County, Oklahoma. It was built in 2008, so it is 17 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2042. The structure is 57 ft (17.3 m) long and 62 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN3708 Larkspur LN
CrossesCreek
Location.04N of Wilson St.
RouteCity Street N3708
CountyBryan County
StateOklahoma
Coordinates34.01279, -96.41201
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length57 ft (17.3 m)
Longest span16 ft (4.9 m)
Deck width62 ft (19 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3708 Larkspur LN over Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is N3708 Larkspur LN over 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 2024.

How much traffic does N3708 Larkspur LN over Creek carry?

About 100 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N3708 Larkspur LN over Creek?

The structure is 57 ft (17.3 m) long with a longest span of 16 ft (4.9 m) and a deck 62 ft wide.

Who owns N3708 Larkspur LN over Creek?

It is owned by the City or Municipal Highway Agency.