US Bridges

SR 4645 SB over I-69 Nb/Sb

Fair

Monroe County, Indiana · 00.02 E SR 45 · Structure no. 017145

Built
2001
24 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
265 ft
2 main spans
Daily traffic
27,052
2011 count
Owner
State
State Highway Agency

About this bridge

SR 4645 SB over I-69 Nb/Sb is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 4645 SB over I-69 Nb/Sb in Monroe County, Indiana. It was built in 2001, so it is 24 years old, younger 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 27,052 vehicles a day, roughly 10% of them trucks, projected to reach 33,448 by 2031. The structure is 265 ft (80.7 m) long and 127 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 4645 SB
CrossesI-69 Nb/Sb
Location00.02 E SR 45
RouteState Highway 46
CountyMonroe County
StateIndiana
Coordinates39.18712, -86.55513
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length265 ft (80.7 m)
Longest span132 ft (40.1 m)
Deck width127 ft (38.6 m)
Roadway width98 ft (30 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,052 (2011)
Projected traffic33,448 by 2031
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 SR 4645 SB over I-69 Nb/Sb built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR 4645 SB over I-69 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 March 2024.

How much traffic does SR 4645 SB over I-69 Nb/Sb carry?

About 27,052 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is SR 4645 SB over I-69 Nb/Sb?

The structure is 265 ft (80.7 m) long with a longest span of 132 ft (40.1 m) and a deck 127 ft wide.

Who owns SR 4645 SB over I-69 Nb/Sb?

It is owned by the State Highway Agency.