US Bridges

IRR E3530 over Wild Horse Creek

PoorPosted for load

Lincoln County, Oklahoma · 3.1W 1.2N of Elba · Structure no. 010560000000000

Built
1920
105 years old
Condition
Poor
inspected May 2023
Type
Truss - Thru
Steel
Length
79 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

IRR E3530 over Wild Horse Creek is a steel truss - thru carrying IRR E3530 over Wild Horse Creek in Lincoln County, Oklahoma. It was built in 1920, so it is 105 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 79 ft (24.2 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIRR E3530
CrossesWild Horse Creek
Location3.1W 1.2N of Elba
RouteCounty Highway N3530
Coordinates35.93038, -96.71416
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating21.6 US tons
Inventory rating12.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length79 ft (24.2 m)
Longest span45 ft (13.7 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR E3530 over Wild Horse Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is IRR E3530 over Wild Horse 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 May 2023.

How much traffic does IRR E3530 over Wild Horse Creek carry?

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

How long is IRR E3530 over Wild Horse Creek?

The structure is 79 ft (24.2 m) long with a longest span of 45 ft (13.7 m) and a deck 16 ft wide.

Who owns IRR E3530 over Wild Horse Creek?

It is owned by the County Highway Agency.