US Bridges

S.H. 17A over I-35 under

Good

Garvin County, Oklahoma · 8.4 MI N Murray C/L · Structure no. 173350000000000

Built
1968
57 years old, rebuilt 2017
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
1,900
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 17A over I-35 under is a steel continuous stringer/multi-beam or girder carrying S.H. 17A over I-35 under in Garvin County, Oklahoma. It was built in 1968 and reconstructed in 2017, so it is 57 years old, older 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 1,900 vehicles a day, roughly 15% of them trucks, projected to reach 3,040 by 2042. The structure is 226 ft (68.9 m) long and 33 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesS.H. 17A
CrossesI-35 under
Location8.4 MI N Murray C/L
RouteState Highway 17A
CountyGarvin County
StateOklahoma
Coordinates34.6228, -97.21674
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.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2022)
Projected traffic3,040 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 17A over I-35 under built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2017.

What condition is S.H. 17A over I-35 under 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 January 2023.

How much traffic does S.H. 17A over I-35 under carry?

About 1,900 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 17A over I-35 under?

The structure is 226 ft (68.9 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns S.H. 17A over I-35 under?

It is owned by the State Highway Agency.