US Bridges

SR 39 over Mill Creek

Good

LaPorte County, Indiana · 03.17 N US 30 · Structure no. 013510

Built
1951
74 years old, rebuilt 2004
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
2,568
2010 count
Owner
State
State Highway Agency

About this bridge

SR 39 over Mill Creek is a prestressed concrete box beam or girders - single or spread carrying SR 39 over Mill Creek in LaPorte County, Indiana. It was built in 1951 and reconstructed in 2004, so it is 74 years old, older than the Indiana average of 46.6 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 2,568 vehicles a day, roughly 10% of them trucks, projected to reach 3,876 by 2030. The structure is 39 ft (11.8 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 39
CrossesMill Creek
Location03.17 N US 30
RouteState Highway 39
CountyLaPorte County
StateIndiana
Coordinates41.45132, -86.73728
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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating30 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.8 m)
Longest span36 ft (10.9 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,568 (2010)
Projected traffic3,876 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 39 over Mill Creek built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2004.

What condition is SR 39 over Mill 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 December 2023.

How much traffic does SR 39 over Mill Creek carry?

About 2,568 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is SR 39 over Mill Creek?

The structure is 39 ft (11.8 m) long with a longest span of 36 ft (10.9 m) and a deck 35 ft wide.

Who owns SR 39 over Mill Creek?

It is owned by the State Highway Agency.