US Bridges

Ill 37 over Gun Creek

Fair

Franklin County, Illinois · 1 MI N Whittington · Structure no. 028003200000000

Built
1964
61 years old, rebuilt 2002
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
200 ft
3 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 37 over Gun Creek is a steel continuous stringer/multi-beam or girder carrying Ill 37 over Gun Creek in Franklin County, Illinois. It was built in 1964 and reconstructed in 2002, so it is 61 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 3,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,939 by 2046. The structure is 200 ft (61 m) long and 39 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIll 37
CrossesGun Creek
Location1 MI N Whittington
RouteState Highway 37
CountyFranklin County
StateIllinois
Coordinates38.10461, -88.90774
Functional classRural Major Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating98.2 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (61 m)
Longest span76 ft (23.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic3,939 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$710,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ill 37 over Gun Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2002.

What condition is Ill 37 over Gun Creek 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 July 2023.

How much traffic does Ill 37 over Gun Creek carry?

About 3,500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ill 37 over Gun Creek?

The structure is 200 ft (61 m) long with a longest span of 76 ft (23.1 m) and a deck 39 ft wide.

Who owns Ill 37 over Gun Creek?

It is owned by the State Highway Agency.