US Bridges

CR 3100 over IH 20

Good

Smith County, Texas · 2.0 MI E of US 271 · Structure no. 102120049506385

Built
2009
16 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
294 ft
4 main spans
Daily traffic
77
2021 count
Owner
State
State Highway Agency

About this bridge

CR 3100 over IH 20 is a steel continuous stringer/multi-beam or girder carrying CR 3100 over IH 20 in Smith County, Texas. It was built in 2009, so it is 16 years old, younger than the Texas average of 44.4 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 77 vehicles a day, roughly 3% of them trucks, projected to reach 77 by 2041. The structure is 294 ft (89.6 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCR 3100
CrossesIH 20
Location2.0 MI E of US 271
RouteCounty Highway 3100
StateTexas
Coordinates32.43751, -95.09959
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length294 ft (89.6 m)
Longest span82 ft (25 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2021)
Projected traffic77 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR 3100 over IH 20 built?

It was built in 2009, making it 16 years old in 2025.

What condition is CR 3100 over IH 20 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 CR 3100 over IH 20 carry?

About 77 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is CR 3100 over IH 20?

The structure is 294 ft (89.6 m) long with a longest span of 82 ft (25 m) and a deck 30 ft wide.

Who owns CR 3100 over IH 20?

It is owned by the State Highway Agency.