US Bridges

1030C over Simom Creek

Good

Carter County, Oklahoma · 5MIS-.2MIW US70 & US76N · Structure no. 222970000000000

Built
1989
36 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
236
2022 count
Owner
County
County Highway Agency

About this bridge

1030C over Simom Creek is a prestressed concrete stringer/multi-beam or girder carrying 1030C over Simom Creek in Carter County, Oklahoma. It was built in 1989, so it is 36 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 236 vehicles a day, roughly 15% of them trucks, projected to reach 378 by 2042. The structure is 87 ft (26.5 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries1030C
CrossesSimom Creek
Location5MIS-.2MIW US70 & US76N
RouteCounty Highway 1030C
Coordinates34.10023, -97.48
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating51.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2022)
Projected traffic378 by 2042
Trucks15%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$471,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 1030C over Simom Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is 1030C over Simom 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 March 2023.

How much traffic does 1030C over Simom Creek carry?

About 236 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 1030C over Simom Creek?

The structure is 87 ft (26.5 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns 1030C over Simom Creek?

It is owned by the County Highway Agency.