US Bridges

E1770 over Willow Creek

Poor

Stephens County, Oklahoma · .8E US 81 2.9S SH 7 · Structure no. 245910000000000

Built
1993
32 years old
Condition
Poor
inspected June 2024
Type
Culvert
Concrete
Length
63 ft
4 main spans
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

E1770 over Willow Creek is a concrete culvert carrying E1770 over Willow Creek in Stephens County, Oklahoma. It was built in 1993, so it is 32 years old, younger 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 3 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.

It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2042. The structure is 63 ft (19.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesE1770
CrossesWillow Creek
Location.8E US 81 2.9S SH 7
RouteCounty Highway E1770
CountyStephens County
StateOklahoma
Coordinates34.44892, -97.96047
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span17 ft (5.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic320 by 2042
Trucks10%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E1770 over Willow Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is E1770 over Willow 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 June 2024.

How much traffic does E1770 over Willow Creek carry?

About 200 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E1770 over Willow Creek?

The structure is 63 ft (19.2 m) long with a longest span of 17 ft (5.2 m) and a deck 34 ft wide.

Who owns E1770 over Willow Creek?

It is owned by the County Highway Agency.