US Bridges

FM 73 over Navasota River

Good

Limestone County, Texas · 5.83 MI NE of US 84 · Structure no. 091470067301009

Built
1987
38 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
182 ft
6 main spans
Daily traffic
729
2023 count
Owner
State
State Highway Agency

About this bridge

FM 73 over Navasota River is a concrete stringer/multi-beam or girder carrying FM 73 over Navasota River in Limestone County, Texas. It was built in 1987, so it is 38 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 729 vehicles a day, roughly 9% of them trucks, projected to reach 910 by 2038. The structure is 182 ft (55.5 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM 73
CrossesNavasota River
Location5.83 MI NE of US 84
RouteState Highway 73
StateTexas
Coordinates31.70195, -96.72263
Functional classRural Major Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic729 (2023)
Projected traffic910 by 2038
Trucks9%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 73 over Navasota River built?

It was built in 1987, making it 38 years old in 2025.

What condition is FM 73 over Navasota River 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 November 2024.

How much traffic does FM 73 over Navasota River carry?

About 729 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is FM 73 over Navasota River?

The structure is 182 ft (55.5 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns FM 73 over Navasota River?

It is owned by the State Highway Agency.