US Bridges

SR 8 over Davidson Drain

Good

LaPorte County, Indiana · 01.00 W SR 39 · Structure no. 002220

Built
1936
89 years old
Condition
Good
inspected December 2024
Type
Arch - Deck
Concrete
Length
43 ft
1 main span
Daily traffic
1,968
2022 count
Owner
State
State Highway Agency

About this bridge

SR 8 over Davidson Drain is a concrete arch - deck carrying SR 8 over Davidson Drain in LaPorte County, Indiana. It was built in 1936, so it is 89 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 1,968 vehicles a day, roughly 10% of them trucks, projected to reach 3,232 by 2030. The structure is 43 ft (13.1 m) long and 31 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesSR 8
CrossesDavidson Drain
Location01.00 W SR 39
RouteState Highway 8
StateIndiana
Coordinates41.31711, -86.75666
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
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length43 ft (13.1 m)
Longest span40 ft (12.1 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,968 (2022)
Projected traffic3,232 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 8 over Davidson Drain built?

It was built in 1936, making it 89 years old in 2025.

What condition is SR 8 over Davidson Drain 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 2024.

How much traffic does SR 8 over Davidson Drain carry?

About 1,968 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SR 8 over Davidson Drain?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.1 m) and a deck 31 ft wide.

Who owns SR 8 over Davidson Drain?

It is owned by the State Highway Agency.