US Bridges

E1660 over Boulder Creek

Good

Comanche County, Oklahoma · 2.2S 2.3E of US 62/SH 115 · Structure no. 303800000000000

Built
2014
11 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
135 ft
1 main span
Daily traffic
76
2022 count
Owner
County
County Highway Agency

About this bridge

E1660 over Boulder Creek is a prestressed concrete stringer/multi-beam or girder carrying E1660 over Boulder Creek in Comanche County, Oklahoma. It was built in 2014, so it is 11 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 76 vehicles a day, roughly 10% of them trucks, projected to reach 95 by 2042. The structure is 135 ft (41.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesE1660
CrossesBoulder Creek
Location2.2S 2.3E of US 62/SH 115
RouteCounty Highway E1660
Coordinates34.60917, -98.59194
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length135 ft (41.1 m)
Longest span135 ft (41.1 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76 (2022)
Projected traffic95 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E1660 over Boulder Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is E1660 over Boulder Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does E1660 over Boulder Creek carry?

About 76 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E1660 over Boulder Creek?

The structure is 135 ft (41.1 m) long with a longest span of 135 ft (41.1 m) and a deck 28 ft wide.

Who owns E1660 over Boulder Creek?

It is owned by the County Highway Agency.