US Bridges

N3945 (n Hartford) over Flat Rock Creek

Fair

Tulsa County, Oklahoma · 4000 N Hartford · Structure no. 157620000000000

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
135 ft
3 main spans
Daily traffic
2,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3945 (n Hartford) over Flat Rock Creek is a steel continuous stringer/multi-beam or girder carrying N3945 (n Hartford) over Flat Rock Creek in Tulsa County, Oklahoma. It was built in 1963, so it is 62 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.

It carries about 2,000 vehicles a day, roughly 5% of them trucks, projected to reach 3,200 by 2042. The structure is 135 ft (41.3 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN3945 (n Hartford)
CrossesFlat Rock Creek
Location4000 N Hartford
RouteCity Street N3945
CountyTulsa County
StateOklahoma
Coordinates36.21283, -95.9845
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.3 m)
Longest span50 ft (15.2 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2022)
Projected traffic3,200 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N3945 (n Hartford) over Flat Rock Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is N3945 (n Hartford) over Flat Rock 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 May 2024.

How much traffic does N3945 (n Hartford) over Flat Rock Creek carry?

About 2,000 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N3945 (n Hartford) over Flat Rock Creek?

The structure is 135 ft (41.3 m) long with a longest span of 50 ft (15.2 m) and a deck 49 ft wide.

Who owns N3945 (n Hartford) over Flat Rock Creek?

It is owned by the City or Municipal Highway Agency.