US Bridges

FAS 1604/TR 349 over FAI 172

Fair

Adams County, Illinois · 1.3MI N I172/IL104 · Structure no. 001004800000000

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
347 ft
2 main spans
Daily traffic
4,850
2024 count
Owner
State
State Highway Agency

About this bridge

FAS 1604/TR 349 over FAI 172 is a steel continuous stringer/multi-beam or girder carrying FAS 1604/TR 349 over FAI 172 in Adams County, Illinois. It was built in 1976, so it is 49 years old, older than the Illinois average of 45.3 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 4,850 vehicles a day, roughly 16% of them trucks, projected to reach 4,949 by 2046. The structure is 347 ft (105.9 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAS 1604/TR 349
CrossesFAI 172
Location1.3MI N I172/IL104
RouteCounty Highway 0
CountyAdams County
StateIllinois
Coordinates39.95399, -91.32274
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length347 ft (105.9 m)
Longest span133 ft (40.4 m)
Deck width64 ft (19.5 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,850 (2024)
Projected traffic4,949 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 FAS 1604/TR 349 over FAI 172 built?

It was built in 1976, making it 49 years old in 2025.

What condition is FAS 1604/TR 349 over FAI 172 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 October 2024.

How much traffic does FAS 1604/TR 349 over FAI 172 carry?

About 4,850 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is FAS 1604/TR 349 over FAI 172?

The structure is 347 ft (105.9 m) long with a longest span of 133 ft (40.4 m) and a deck 64 ft wide.

Who owns FAS 1604/TR 349 over FAI 172?

It is owned by the State Highway Agency.