US Bridges

SR 1 over Lamb Ditch

Good

Randolph County, Indiana · 04.31 N US 36 · Structure no. 000250

Built
2003
22 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
1,118
2004 count
Owner
State
State Highway Agency

About this bridge

SR 1 over Lamb Ditch is a concrete culvert carrying SR 1 over Lamb Ditch in Randolph County, Indiana. It was built in 2003, so it is 22 years old, younger 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 1,118 vehicles a day, roughly 10% of them trucks, projected to reach 1,856 by 2030. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR 1
CrossesLamb Ditch
Location04.31 N US 36
RouteState Highway 1
StateIndiana
Coordinates40.11039, -85.12725
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span22 ft (6.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,118 (2004)
Projected traffic1,856 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 1 over Lamb Ditch built?

It was built in 2003, making it 22 years old in 2025.

What condition is SR 1 over Lamb Ditch 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 April 2023.

How much traffic does SR 1 over Lamb Ditch carry?

About 1,118 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is SR 1 over Lamb Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.8 m).

Who owns SR 1 over Lamb Ditch?

It is owned by the State Highway Agency.