US Bridges

Airport Road over I-69

Fair

Clinton County, Michigan · 4.0 MI NW of Lansing · Structure no. 000000000001871

Built
1981
44 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
268 ft
2 main spans
Daily traffic
4,494
1984 count
Owner
State
State Highway Agency

About this bridge

Airport Road over I-69 is a steel stringer/multi-beam or girder carrying Airport Road over I-69 in Clinton County, Michigan. It was built in 1981, so it is 44 years old, younger than the Michigan average of 48.3 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 4,494 vehicles a day, roughly 5% of them trucks, projected to reach 12,500 by 2015. The structure is 268 ft (81.7 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAirport Road
CrossesI-69
Location4.0 MI NW of Lansing
RouteCounty Highway 0
CountyClinton County
StateMichigan
Coordinates42.80777, -84.60273
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span135 ft (41.2 m)
Deck width46 ft (14 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,494 (1984)
Projected traffic12,500 by 2015
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Airport Road over I-69 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Airport Road over I-69 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 April 2024.

How much traffic does Airport Road over I-69 carry?

About 4,494 vehicles per day (1984 count), of which roughly 5% are trucks.

How long is Airport Road over I-69?

The structure is 268 ft (81.7 m) long with a longest span of 135 ft (41.2 m) and a deck 46 ft wide.

Who owns Airport Road over I-69?

It is owned by the State Highway Agency.