US Bridges

FM 3311 over IH 20

Fair

Smith County, Texas · 0.35 MI E of SH 155 · Structure no. 102120049505172

Built
1964
61 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
222 ft
2 main spans
Daily traffic
746
2021 count
Owner
State
State Highway Agency

About this bridge

FM 3311 over IH 20 is a steel continuous stringer/multi-beam or girder carrying FM 3311 over IH 20 in Smith County, Texas. It was built in 1964, so it is 61 years old, older than the Texas average of 44.4 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 746 vehicles a day, roughly 13% of them trucks, projected to reach 1,044 by 2041. The structure is 222 ft (67.7 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFM 3311
CrossesIH 20
Location0.35 MI E of SH 155
RouteState Highway 3311
CountySmith County
StateTexas
Coordinates32.44814, -95.18249
Functional classUrban 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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length222 ft (67.7 m)
Longest span64 ft (19.5 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic746 (2021)
Projected traffic1,044 by 2041
Trucks13%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$14,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM 3311 over IH 20 built?

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

What condition is FM 3311 over IH 20 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 2023.

How much traffic does FM 3311 over IH 20 carry?

About 746 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is FM 3311 over IH 20?

The structure is 222 ft (67.7 m) long with a longest span of 64 ft (19.5 m) and a deck 27 ft wide.

Who owns FM 3311 over IH 20?

It is owned by the State Highway Agency.