US Bridges

Thayer Road over I-65 Nb/Sb

Fair

Newton County, Indiana · 02.15 N SR 10 · Structure no. 038230

Built
1966
59 years old, rebuilt 2004
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
5 main spans
Daily traffic
1,807
2004 count
Owner
State
State Highway Agency

About this bridge

Thayer Road over I-65 Nb/Sb is a steel continuous stringer/multi-beam or girder carrying Thayer Road over I-65 Nb/Sb in Newton County, Indiana. It was built in 1966 and reconstructed in 2004, so it is 59 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,807 vehicles a day, roughly 10% of them trucks, projected to reach 3,001 by 2030. The structure is 290 ft (88.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesThayer Road
CrossesI-65 Nb/Sb
Location02.15 N SR 10
RouteCounty Highway 0
CountyNewton County
StateIndiana
Coordinates41.17418, -87.27736
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length290 ft (88.3 m)
Longest span78 ft (23.7 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,807 (2004)
Projected traffic3,001 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Thayer Road over I-65 Nb/Sb built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2004.

What condition is Thayer Road over I-65 Nb/Sb in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Thayer Road over I-65 Nb/Sb carry?

About 1,807 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is Thayer Road over I-65 Nb/Sb?

The structure is 290 ft (88.3 m) long with a longest span of 78 ft (23.7 m) and a deck 34 ft wide.

Who owns Thayer Road over I-65 Nb/Sb?

It is owned by the State Highway Agency.