US Bridges

Mission Road over Lewis Drain

Poor

Isabella County, Michigan · 0.2M S NE Cor Sec 22 T15N · Structure no. 000000000004311

Built
1930
95 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Concrete
Length
23 ft
1 main span
Daily traffic
6,140
2002 count
Owner
County
County Highway Agency

About this bridge

Mission Road over Lewis Drain is a concrete tee beam carrying Mission Road over Lewis Drain in Isabella County, Michigan. It was built in 1930, so it is 95 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,140 vehicles a day, projected to reach 9,120 by 2022. The structure is 23 ft (7 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMission Road
CrossesLewis Drain
Location0.2M S NE Cor Sec 22 T15N
RouteCounty Highway 3767
CountyIsabella County
StateMichigan
Coordinates43.68017, -84.76769
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating52.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,140 (2002)
Projected traffic9,120 by 2022
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mission Road over Lewis Drain built?

It was built in 1930, making it 95 years old in 2025.

What condition is Mission Road over Lewis Drain in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Mission Road over Lewis Drain carry?

About 6,140 vehicles per day (2002 count).

How long is Mission Road over Lewis Drain?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 39 ft wide.

Who owns Mission Road over Lewis Drain?

It is owned by the County Highway Agency.