US Bridges

N4135 over Hickory Creek

PoorPosted for load

Nowata County, Oklahoma · 2.5 MI N of Lenapah · Structure no. 032010000000000

Built
1930
95 years old
Condition
Poor
inspected July 2024
Type
Truss - Thru
Steel
Length
164 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4135 over Hickory Creek is a steel truss - thru carrying N4135 over Hickory Creek in Nowata County, Oklahoma. It was built in 1930, so it is 95 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 164 ft (50 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN4135
CrossesHickory Creek
Location2.5 MI N of Lenapah
RouteCounty Highway N4135
Coordinates36.89057, -95.63714
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.1 US tons
Inventory rating2.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length164 ft (50 m)
Longest span96 ft (29.3 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$642,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4135 over Hickory Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is N4135 over Hickory 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 July 2024.

How much traffic does N4135 over Hickory Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4135 over Hickory Creek?

The structure is 164 ft (50 m) long with a longest span of 96 ft (29.3 m) and a deck 19 ft wide.

Who owns N4135 over Hickory Creek?

It is owned by the County Highway Agency.